Steinway & Sons

Steinway & Sons

Company type	Private
Industry	Musical instruments
Founded	1 January 1853 (1853-01-01) in New York City, United States
Founder	Heinrich Engelhard Steinweg (Henry E. Steinway)
Headquarters	New York City , United States
Area served	Worldwide
Products	Pianos (Steinway, Boston, Essex)
Parent	Steinway Musical Instruments (since 1995)

Steinway & Sons, commonly referred to as Steinway (), is a piano manufacturing company with German-American roots, established in 1853 in New York City by the German craftsman Heinrich Engelhard Steinweg, who later adopted the name Henry E. Steinway. The company's growth necessitated the creation of a larger factory in New York and an additional production facility in Hamburg, Germany. The New York plant primarily serves the American continents, whereas the Hamburg site caters to international markets.

Steinway stands as a premier piano manufacturer, recognized for its superior craftsmanship and pioneering contributions to piano design. Since 1857, it has secured 139 patents and commands more than 80% of the luxury grand piano sector. This overwhelming market dominance has sparked criticism regarding reduced innovation and a homogenized tonal quality across pianos.

The brand has been honored with numerous awards, beginning with a gold medal at the 1855 American Institute Fair and accumulating 35 gold medals by 1862. Further distinctions include three medals awarded at the 1867 International Exposition in Paris. Steinway's European branch was granted a royal warrant by Queen Elizabeth II. In 1996, The Music Trades magazine recognized Steinway as Company of the Year for its exceptional performance, product excellence, and effective marketing strategies.

In addition to its flagship Steinway line, the company offers two more affordable piano brands: Boston and Essex.

Foundation and growth

Heinrich Engelhard Steinweg began crafting pianos in the 1820s in Seesen, Germany, operating under the Steinweg name. After emigrating to America with his family in 1850, he founded Steinway & Sons in 1853, setting up a workshop in Manhattan, New York City. The first piano produced on American soil bore serial number 483—continuing the count from German production—and sold for $500. Rapid expansion led to relocating to larger facilities by 1854, and by 1864, the family had anglicized their surname to Steinway.

By the 1860s, the company operated a factory situated on Park Avenue between 52nd and 53rd Streets, employing approximately 350 workers and increasing annual output from 500 to nearly 1,800 pianos. The majority of employees were German immigrants. The firm was distinguished by numerous innovations; nearly half of its 139 patents originated from the first two generations of the Steinway family. These technological advancements improved product quality and solidified Steinway’s leadership position in the market. By 1862, Steinway had earned over 35 medals at prominent exhibitions, enhancing its reputation.

In 1865, following the deaths of Heinrich’s sons Henry and Charles, C. F. Theodor Steinweg departed Germany to manage the New York operations after selling his stake in the German factory—which became known as Grotrian-Steinweg. He changed his name to C. F. Theodore Steinway and maintained business ties between New York and Braunschweig.

During the 1870s and ’80s, William Steinway initiated development of a company town named Steinway Village in Queens, New York. This included constructing a new factory integrated with employee housing and community amenities to promote workforce stability and operational efficiency. Today, Steinway Street remains an important route within Queens.

At trade exhibitions such as the 1876 Centennial Exposition in Philadelphia, Steinway competed fiercely against rivals like Chickering and Weber. Controversy emerged over accusations of bribery related to award acquisitions; some sources suggest William Steinway admitted involvement while others contest these claims.

To better serve European customers and circumvent import tariffs, Steinway established a manufacturing plant in Hamburg in 1880 under C. F. Theodore Steinway’s direction. This facility functioned both as a production site and experimental workshop where precision machinery was developed—later implemented at the New York factory—strengthening global operations and reinforcing Steinway’s premium market advantage.

The company faced labor unrest typical of industrial firms during the late 19th century, including strikes and lockouts. Management responded by employing private detectives and coordinating with law enforcement to manage disputes.

By century’s end, Steinway had achieved notable acclaim: composer Franz Liszt praised its grand pianos’ exceptional tonal qualities in an 1883 correspondence. In 1890, Queen Victoria awarded Steinway its inaugural royal warrant of appointment; similar endorsements from other European monarchies followed, elevating its international brand prestige.

Steinway Halls

Between 1864 and 1866, William Steinway, recognized for pioneering Steinway's marketing achievements, supervised the erection of Steinway Hall on East 14th Street in Manhattan. This $200,000 edifice housed New York City's second-largest concert hall alongside showrooms dedicated to Steinway pianos. Visitors attending concerts passed through these showrooms to access the hall, which contributed to a surge in piano sales exceeding 400 units in 1867. Steinway Hall emerged as a key cultural venue, serving as the home of the New York Philharmonic for a quarter-century until the inauguration of Carnegie Hall in 1891.

In 1925, Steinway Hall moved to West 57th Street. The company sold this location in 2013 for $46 million and vacated it by late 2014. Subsequently, a new Steinway Hall was inaugurated on Sixth Avenue in 2016.

On the international stage, Steinway established a second hall in London in 1875. Initially situated on Wigmore Street, it relocated to St. George Street in 1924 before settling at its current site on Marylebone Lane.

Expansion

In 1857, Steinway introduced a collection of art case pianos crafted by various artists. The 100,000th grand piano produced by Steinway, adorned by artist Thomas Wilmer Dewing, was presented to the White House in 1903. This instrument was replaced in 1938 by the 300,000th Steinway grand piano, which continues to be used there today. It is generally displayed in the White House's largest chamber, the East Room.

Steinway later ventured into the player piano market, integrating technologies such as Welte-Mignon, Duo-Art, and Ampico. By the decade of the 1920s, annual sales reached up to 6,000 units. In 1929, the company crafted an extraordinary double-keyboard grand piano featuring 164 keys and four pedals; this unique instrument was restored in 2005.

During the Second World War, Steinway’s New York manufacturing facility shifted its focus to producing military gliders and manufactured 2,436 compact Victory Vertical or G.I. pianos designed for portability and soldier use. Meanwhile, the Hamburg plant endured strict wartime limitations and bombing damage but was reconstructed after the war with assistance from the Marshall Plan.

In the late 1960s, Steinway initiated legal proceedings against rival Grotrian-Steinweg regarding trademark infringement over "Steinweg." The court ruled in Steinway’s favor on appeal in 1975, compelling Grotrian to cease using "Steinweg" within U.S. markets. This pivotal case introduced the legal doctrine known as Initial Interest Confusion within trademark jurisprudence.

The 500,000th Steinway

In 1988, Steinway manufactured its half-millionth piano, designed by artist Wendell Castle. This model bears engravings of the names of all 832 pianists and 90 ensembles listed on the 1987 Steinway Artist roster, including distinguished figures such as Van Cliburn, Vladimir Horowitz, and Billy Joel.

The company established the C. F. Theodore Steinway Academy for Concert Technicians (known as Steinway Academy) at its Hamburg factory in 1994 to offer specialized education in piano tuning and maintenance for technicians worldwide. By the year 2000, production had reached the milestone of the 550,000th piano.

To commemorate its sesquicentennial anniversary in 2003, Steinway hosted a three-day concert series at Carnegie Hall, featuring performances spanning classical music, jazz, and pop by artists including Peter Cincotti, Art Garfunkel, and Herbie Hancock. For this event, fashion designer Karl Lagerfeld created an exclusive limited edition grand piano.

The company celebrated the Hamburg factory's 125th anniversary in 2005 with a concert held at the Laeiszhalle, attended by an audience of approximately 1,800 guests from over thirty countries and showcasing performers like Vladimir Ashkenazy and Lang Lang. A limited edition grand piano designed by Albrecht von Goertz was also unveiled during this occasion.

Henry Z. Steinway—great-grandson of the founder and president from 1956 to 1977—remained actively involved with Steinway until his passing in 2008 at age ninety-three. A Harvard alumnus and the last family member to lead the company, he continued endorsing bespoke limited-edition pianos while representing his family at public engagements.

Ownership transitions

In 1972, after enduring an extended strike, financial difficulties, and lukewarm enthusiasm from certain members of the Steinway family, the company was acquired by CBS. At that period, CBS held ownership of various entertainment-related enterprises, including guitar manufacturer Fender, drum producer Rogers, piano maker Rhodes, as well as the New York Yankees baseball franchise. CBS’s objective was to establish a comprehensive musical conglomerate encompassing recording, radio, television, and instrument manufacturing. This plan, however, did not yield the expected results, prompting the sale of Steinway in 1985 to a group of investors from the Boston area led by Robert and John P. Birmingham. To facilitate this acquisition, they created Steinway Musical Properties.

A decade later, in 1995, Steinway Musical Properties became part of Selmer Industries, which consolidated the brand into the larger musical conglomerate known as Steinway Musical Instruments.

In June 2013, private equity firm Kohlberg & Company proposed a $438 million offer to purchase Steinway Musical Instruments. Shortly thereafter, hedge fund Paulson & Co. Inc. submitted a superior bid of $512 million to privatize the company. The board endorsed this higher offer, and the transaction was finalized in September 2013.

Recent developments

The global economic crisis of 2008 caused Steinway grand piano sales to halve, resulting in a 30% reduction in staff at the New York manufacturing facility between 2008 and 2009. U.S. sales contracted by 21% in 2009 but showed signs of recovery starting in 2010 and continued to improve throughout 2011.

In 2015, Steinway returned to the player piano market with its digitally enhanced Spirio series. This innovation utilized technology developed by Austrian engineer Wayne Stahnke, whose system Steinway acquired and rebranded in 2014. Unlike initial versions offered by competitors, the original Spirio did not include recording functionality; this feature was introduced in 2018 with the Spirio r. The "non-parasitic" design employs over twenty optical sensors to capture intricate performance details without altering the instrument’s touch or sound quality. By 2024, the Spirio collection contained upwards of 4,000 recorded performances.

That same year marked production of Steinway's 600,000th piano—a premium model featuring a Fibonacci spiral aesthetic and Macassar ebony veneer. This masterpiece required four years and approximately 6,000 hours to complete and carried a price tag of $2.4 million.

As of early 2021, ultimate ownership of Steinway & Sons rests with Paulson & Co., with corporate headquarters located at 1251 Avenue of the Americas in New York City.

Product range

Steinway pianos are distributed globally through roughly 200 authorized dealers operating nearly 300 showrooms worldwide. The primary distinction among Steinway models lies in their dimensions—denoted by model letters—which largely influence their pricing.

Pre-owned Steinway pianos are also available on secondary markets, with prices fluctuating depending on factors such as size, age, condition, and restoration standards. The company additionally offers certified pre-owned instruments that utilize parts approved by Steinway.

Grand and upright models

Steinway’s production includes multiple piano models:

The Hamburg facility manufactures seven grand piano variants alongside one upright model (model numbers correspond to length measured in centimeters). Meanwhile, the New York plant produces six grand piano models plus one upright variant.

Grand pianos

• Hamburg facility:
  • S-155
  • M-170
  • O-180
  • A-188
  • B-211
  • C-227
  • D-274

• New York facility:
  • S (5'1")
  • M (5'7")
  • O (5'10¾")
  • A (6'2")
  • B (6'11")
  • D (8'11¾")

The Model L, measuring 5’10½", was manufactured from 1922 until 2006, serving as the successor to the Model O.

Upright pianos

• Hamburg facility:
  • K-132

• New York facility:
  • K-52

Historically, Steinway produced upright pianos in multiple dimensions, including the Model I/Model R.

Designer cases

Renowned artists such as Karl Lagerfeld, Dakota Jackson, Walter Dorwin Teague, Louis Comfort Tiffany, Sir Lawrence Alma-Tadema, George Schastey, and the Herter Brothers have contributed unique designs for Steinway pianos. These creations belong to the art case or limited edition series.

Steinway commenced crafting art case pianos in 1857, reaching their peak popularity in the late 1800s; currently, their production is infrequent. Distinguished examples include the 1887 Alma-Tadema grand piano, the 1903 100,000th piano, the 1938 300,000th piano, and the 2008 Sound of Harmony. The Alma-Tadema—conceived by Sir Lawrence Alma-Tadema with interior paintings by Edward Poynter—is constructed from ebony adorned with ivory and mother-of-pearl inlays. Financier Henry Gurdon Marquand acquired it, and it later sold at Christie's in 1997 for $1.2 million, setting a record for piano auctions. It is currently exhibited at the Clark Art Institute.

The 100,000th Steinway piano, presented to the White House in 1903, showcases cherry wood embellished with gold leaf and painted motifs by Thomas Dewing depicting the nine Muses. It was succeeded in usage by the 300,000th piano in 1938, which features gilded mahogany legs sculpted as eagles by Albert Stewart. This piano continues to be used at the White House.

The Sound of Harmony, decorated with inlays of forty distinct woods replicating artwork by Chinese artist Shi Qi, required four years to complete and was valued at €1.2 million. It was displayed at Expo 2010 in Shanghai, China.

Limited edition models include The Steinway Limited Edition designed by Karl Lagerfeld for Steinway's 150th anniversary in 2003 and a grand piano created by Count Albrecht von Goertz to commemorate the Hamburg factory’s 125th anniversary.

In 1993, Steinway introduced the Crown Jewel Collection, featuring grand and upright pianos veneered with rare exotic woods such as Macassar ebony, East Indian rosewood, and kewazinga bubinga instead of conventional black finishes.

Brands

Alongside its flagship Steinway & Sons line, Steinway offers two additional brands: Boston targeting mid-tier buyers and Essex aimed at entry-level customers. These lines utilize more cost-effective materials and manufacturing labor while maintaining designs owned by Steinway but produced in Asia through partner companies. Only authorized Steinway dealers distribute new Boston and Essex pianos.

• Boston: Positioned within the mid-range segment at more accessible prices than Steinway’s premier brand. Manufactured by Kawai Musical Instruments in Hamamatsu, Japan, and Karawang, Indonesia, Boston provides five grand piano sizes and four upright sizes with various finish options. Models range from GP-156 PE to GP-215 PE for grands and UP-118 PE to UP-132 PE for uprights. Boston incorporates Steinway innovations such as a broader tail for an expanded soundboard area, maple inner rims, and Steinway’s patented Octagrip pinblock.

• Essex: Designed for entry-level consumers at prices below both Steinway and Boston lines. Since 2005, Essex pianos are produced by Pearl River Piano Group in Guangzhou, China; previously manufactured by Young Chang in Korea. The collection includes two grand sizes (EGP-155, EGP-173) and four upright sizes (EUP-108 through EUP-123) featuring various finishes. Essex models integrate Steinway-inspired characteristics like a wider tail design, all-wood action built with Steinway geometry, rosette-shaped hammer flanges, and reinforced hammers secured with metal fasteners.

Piano bank

Steinway maintains an international "piano bank" service that grants performing pianists, notably Steinway Artists, the opportunity to select instruments customized to their specific requirements for concerts, recordings, or tours. The company manages the preparation, tuning, and transportation of the selected piano to the performance location, with all associated costs borne by the artist.

This collection includes around 250 Steinway pianos, which together were valued at $12.5 million as of 2019.

German and American factories

Preferences among pianists and technicians vary between Steinway pianos produced in Hamburg and those from New York. Concert pianist Emanuel Ax observes that distinctions arise more from individual instruments than from their factory of origin. Piano expert Larry Fine regards Hamburg Steinways as superior in quality but notes improvements in New York production following 2010.

Steinway allocates its market geographically: the New York facility supplies North and South America, while Hamburg caters to all other regions. Customers globally may order pianos from either factory, both of which utilize components sourced from identical suppliers—Canadian maple for the rims and Alaskan Sitka spruce for soundboards. The soundboard specifications remain consistent across both plants.

To maintain control over its supply chain and ensure quality standards, Steinway acquired German keyboard maker Kluge in 1998 and Ohio-based cast iron plate manufacturer O. S. Kelly Co. in 1999.

Most major concert venues worldwide possess Steinway pianos; for example, Carnegie Hall houses model D-274s from both factories to accommodate varied preferences.

Components

Each Steinway grand piano consists of more than 12,000 individual parts and is handcrafted over a period approaching one year. The company operates lumber yards at both Hamburg and New York locations, where wood is aged between nine months and five years before use. Less than half of the timber procured is ultimately utilized, with over 70% of walnut stock being discarded. Wood procurement is based on availability rather than immediate manufacturing needs.

Rim

Rims on Hamburg-produced Steinways are constructed from alternating layers of hard rock maple and mahogany, whereas New York rims are made exclusively from hard rock maple. These layers are bonded and shaped in a single pressing operation using rim-bending presses originally invented by C. F. Theodore Steinway in 1880. Once bent, the rims are stored in conditioning rooms for more than a month to lower moisture content to roughly six percent.

Plate

Inside each piano, a cast iron plate supports string tension that varies between 16 and 23 tons depending on the model. Positioned above the soundboard, this plate undergoes bronzing, lacquering, polishing, and is embellished with the Steinway emblem. The plates are produced in-house at Steinway's own foundry.

Soundboard and bridges

The soundboard is made from solid spruce, chosen for its excellent ability to transmit and amplify sound. Featuring a patented diaphragmatic design introduced in 1936, it tapers in thickness from the center toward the edges to improve tonal depth and sustain.

The bridges consist of vertically laminated hard rock maple topped with a maple cap; each bridge is individually measured and hand-notched to optimize acoustic performance for each piano.

Keys and Mechanism

Steinway keys are crafted from Bavarian spruce, with the white keytops now manufactured from polymer materials, having replaced ivory since the 1950s in response to regulatory restrictions. The action mechanism is assembled on a tubular metal frame, featuring hammers shaped from high-quality virgin wool felt.

In 1962, Steinway's New York facility launched the Permafree action, incorporating Teflon bushings aimed at lowering production costs and enhancing longevity. Nevertheless, these bushings led to complications due to the differing thermal expansion properties of materials, resulting in increased friction and audible noise. By 1983, Steinway phased out Teflon bushings and retrofitted affected pianos with cloth bushings. Notably, the Hamburg factory never implemented this technology.

Strings and Pinblock

Steinway pianos utilize steel strings in the midrange and treble registers, while bass strings consist of steel cores wound with copper. The strings are evenly spaced and secured by tuning pins embedded into a laminated wooden pinblock engineered for superior tuning stability. In 1872, Steinway patented front and rear duplex scales—concepts influenced by physicist Hermann von Helmholtz—which enable sympathetic vibrations in string segments beyond the primary vibrating length, enriching tonal complexity.

The pinblock is constructed from seven layers of hardwood glued at alternating 45° angles to the grain, significantly improving its ability to retain tuning over time.

Steinway Artists

Rather than merely gifting instruments to musicians as competitors did, founder William Steinway enlisted pianist Anton Rubinstein for an extensive American tour during 1872–73 to actively promote Steinway pianos through live performances. This initiative laid the foundation for what became the Steinway Artist program. Early prominent endorsers included Ignacy Jan Paderewski.

By 2018, approximately 2,000 pianists worldwide had become official Steinway Artists, pledging to perform exclusively on Steinway instruments without receiving financial compensation. This diverse group spans classical music as well as jazz, pop, and rock genres, featuring artists such as Daniel Barenboim, Harry Connick Jr., Billy Joel, Evgeny Kissin, Diana Krall, Yundi Li, and Lang Lang. The historical roster of "Immortal Steinway Artists" includes luminaries like Irving Berlin, Benjamin Britten, George Gershwin, Vladimir Horowitz, Cole Porter, and Sergei Rachmaninoff.

Steinway requires its artists to use its pianos wherever possible—a policy that has occasionally sparked controversy. For instance, Artur Schnabel resisted exclusive use until 1933; Garrick Ohlsson encountered restrictions after publicly praising Bösendorfer in 1972; Angela Hewitt was removed from the list following performances on a Fazioli piano; and Louis Lortie criticized the exclusivity policy as monopolistic after his removal in 2003.

Historically, Steinway invested heavily in artist endorsements to strengthen market position and competitive leverage. Currently, no financial payments are made to artists; participation is voluntary but contingent on exclusive use agreements. Pianists are responsible for costs associated with piano preparation when borrowing instruments for concerts or recordings. The program is widely regarded as a distinctive endorsement model emphasizing strict brand loyalty.

While other manufacturers have attempted similar programs, Steinway’s Artist initiative remains unique due to its rigorous exclusivity requirements and implicit performance commitments.

All-Steinway Schools

The title of All-Steinway School is granted to music institutions where Steinway-designed pianos constitute at least 90 percent of the total inventory, with the requirement that these instruments be purchased rather than donated. Steinway pianos must be present in all performance halls, teaching studios, and practice rooms designated for piano students, while other areas may be equipped with Boston or Essex models. Schools are obligated to keep these pianos in performance-grade condition, employing technicians trained by Steinway; failure to uphold these standards may lead to revocation of the designation.

The Oberlin Conservatory of Music boasts the longest continuous relationship with Steinway, exclusively using their pianos since 1877 and marking the acquisition of its 200th Steinway instrument in 2007. Other distinguished All-Steinway Schools include the Yale School of Music, Curtis Institute of Music, Royal Holloway, University of London, University of Melbourne Faculty of VCA and MCM, and Beijing’s Central Conservatory of Music.

Major purchases supporting these designations include the Crane School of Music’s $3.8 million acquisition of 141 pianos in 2007 and the University of Cincinnati – College-Conservatory of Music’s $4.1 million order for 165 instruments in 2009, ranking among Steinway’s largest transactions.

By 2024, about 200 institutions worldwide have earned All-Steinway School status, reflecting Steinway’s targeted strategy to strengthen its presence in elite educational environments and solidify its market leadership through enduring collaborations.

Piano competitions

Numerous international piano contests exclusively feature Steinway pianos. Since 1999, the Cleveland International Piano Competition has consistently selected Steinway instruments. Other prominent events utilizing Steinway pianos include the Van Cliburn International Piano Competition in Texas, the Gina Bachauer International Piano Competition in Utah, Germany’s International Johann Sebastian Bach Competition, Belgium’s Queen Elisabeth Competition, Italy’s Ferruccio Busoni International Piano Competition, and France’s Long-Thibaud-Crespin Competition.

Awards

Steinway and its leadership have been honored with a variety of distinguished awards that highlight their industry prominence and visionary guidance:

• In 1839, founder Heinrich Engelhard Steinweg earned a gold medal at the Braunschweig state trade exhibition.
• In 1855, Steinway was awarded first prize at the Metropolitan Mechanics Institute fair in Washington, D.C., along with a gold medal at New York City’s American Institute Fair, recognized for exceptional tone quality and craftsmanship.
• From 1855 through 1862, Steinway collected 35 U.S. medals before shifting focus toward international exhibitions.
• At London’s International Exhibition in 1862, Steinway secured first prize.
• The 1867 Paris International Exposition granted Steinway three top distinctions including the Grand Gold Medal of Honor, significantly enhancing its European market presence and inspiring plans for a London retail location.
• During the U.S. Centennial Exposition in 1876, Steinway received two highest honors with an outstanding score of 95.5 out of 96.
• In 1885, gold medals were awarded to Steinway at London’s International Inventions Exhibition and by the Royal Society of Arts.
• In 2007, Henry Z. Steinway was presented with the National Medal of Arts by President George W. Bush in recognition of his commitment to craftsmanship and musical advocacy.
• The Red Dot product design award was bestowed upon Steinway in 2014 for the Arabesque limited edition grand piano, celebrated for its sophisticated aesthetic that complements the brand’s luxury offerings.

These recognitions affirm Steinway's competitive strength and ongoing expansion as a premier manufacturer of high-end pianos.

Patented inventions

Since 1857, Steinway has secured 139 patents related to piano craftsmanship. Among the most significant are:

• Patent No. 26,532 (1859): This patent introduced the technique of "overstringing," where bass strings are positioned above the treble strings, improving tonal richness and string length. This advancement earned a first prize at the 1862 International Exhibition and continues to be a standard feature in grand pianos.

• Patent No. 126,848 (1872): The duplex scale system enables certain string segments to vibrate freely, enhancing the piano’s harmonic complexity—a hallmark of Steinway’s distinctive sound.

• Patent No. 127,383 (1872): This design incorporates a cast iron plate mounted on wooden dowels above the soundboard, forming a resonant chamber that amplifies sound quality.

• Patent No. 156,388 (1874): The sostenuto pedal allows for selective damping of notes, broadening expressive possibilities. Although a similar concept was patented earlier by M. Waldo Hanchett, Steinway obtained its own patent for this mechanism.

• Patent No. 170,645 (1875): Known as the Regulation Action Pilot or Capstan Screw, this innovation facilitates precise hammer action adjustments and eases maintenance procedures.

• Patent No. 233,710 (1880): This patent details bridge construction using vertically laminated layers with consistent grain alignment to effectively transfer string vibrations to the soundboard.

• Patent No. 314,742 (1885): Describes rims crafted from laminated hardwoods—rock maple and mahogany for Hamburg models; rock maple exclusively for New York models—pressed into a single durable unit.

• Patent No. 2,051,633 (1936): Features a soundboard with thickness tapering from center to edge to optimize flexibility and vibration control.

• Patent No. 3,091,149 (1963): Introduces a multi-layered pinblock composed of seven hard maple layers glued at alternating angles to enhance tuning stability.

These patented technologies form the foundation of Steinway’s competitive edge worldwide by elevating product excellence and reinforcing its premium market stature.

Acquisitions

Acquisition year	Company name	Area of business	Valuation (millions USD)
2019	Louis Renner GmbH	Manufacture of piano actions, hammers, and components	Template:Dunno
1999	Kluge Klaviaturen GmbH	Production of piano keyboards	Template:Dunno
1999	O.S. Kelly Co.	Foundry specializing in piano plates	Template:Dunno

Music

Steinway pianos have been prominently featured in a variety of renowned recordings and live performances, reflecting the brand’s influential presence and esteemed reputation in the music industry. Notable examples include:

See also

• Note by Note: The Making of Steinway L1037
• Pianomania

External links

Official company sites

• Steinway & Sons
• Boston
• Essex

Related articles

• Feature on Steinway & Sons in The Brander
• Series covering Steinway grand piano manufacturing in The New York Times

Digital archives and museums

• Steinway & Sons archival collection at the La Guardia and Wagner Archives
• Steinway grand piano dating from 1868 at the Metropolitan Museum of Art
• William Steinway’s diary, genealogy, and photographs held by the National Museum of American History, Smithsonian Institution
• Steinway & Sons materials from 1853–1997 in The Metropolitan Museum of Art's Watson Library Special Collections
• Oral History collection documenting Steinway Bros. at Oral History of American Music