MoodLogic
| Company type | Private |
|---|---|
| Industry | Music recommendation software |
| Founded | 1998 |
| Founder | Tom Sulzer, Christian Pirkner, Elion Chin, Andreas Weigend |
| Fate | Acquired by All Media Guide (2006); discontinued by Macrovision (2008) |
| Headquarters | Santa Clara , United States |
| Products | Music recommendation software, music library management |
MoodLogic was established in 1998 by Tom Sulzer, Christian Pirkner, Elion Chin, and Andreas Weigend and is acknowledged as one of the pioneering platforms for online music recommendation. The company compiled ratings from over 50,000 users on more than one million tracks to create its exclusive model of user preferences.
Software
In addition to its online service, MoodLogic created a software program that utilized a centralized database to facilitate collaborative music categorization by mood. Users could accumulate "credits" by purchasing or analyzing songs to determine their characteristics.
This application produced mood-specific playlists designed to align with the listener’s emotional state or based on a chosen track, matching songs according to tempo, mood, genre, and other factors. It also managed music libraries through a distinctive "fingerprint" assigned to each track. This fingerprint was sent to the server for identification and tagging purposes, which then updated the ID3 metadata accordingly. This process allowed for precise correction and systematic organization of incorrectly tagged mp3 files into artist-specific directories.
Patents
Under Chief Scientist Rehan Khan’s leadership, the team obtained patents such as US Patent 6539395 titled "Method for creating a database for comparing music," and US Patent 7277766 named "Method and system for analyzing digital audio files," which describes a rapid, compact, and reliable audio fingerprinting technology.
2006 buy-out
Although MoodLogic had an engaged user base and a notable launch, its website and software development stalled after 2003, with forum discussions ceasing in 2004. User support inquiries were left unanswered even as the database continued functioning.
In May 2006, All Media Guide, the operator of allmusic.com, acquired MoodLogic. The prospects for ongoing development or integration of MoodLogic’s community within All Media Guide remained unclear. Prominent contributors included musicologist Dr. Robert Gjerdingen, psychologist Daniel Levitin, and record producer as well as e-music.com co-founder Sandy Pearlman.
2008 move to Macrovision
On March 3, 2008, Macrovision discontinued support for MoodLogic’s music management and recommendation software due to significant operational and infrastructure expenses. The company redirected its efforts toward music recommendation via the AMG Data Services Tapestry business-to-business platform.
2009 renaming to Rovi Corporation
Macrovision Solutions Corporation rebranded itself as Rovi Corporation on July 15, 2009. Rovi focuses on digital entertainment technologies that assist consumers in discovering content across television, film, music, and photography sectors. Catering to consumer electronics, cable, satellite providers, entertainment companies, and online distributors, Rovi capitalizes on an extensive repository of entertainment data along with more than 4,000 patents worldwide—including those originating from MoodLogic. The company’s headquarters are located in Santa Clara, California, with additional offices in the United States, Japan, Hong Kong, Luxembourg, and the United Kingdom.