AllMusic (previously All Music Guide or AMG; stylized as allmusic) is an online music guide service, owned by All Media Guide. AllMusic was founded in 1991 by popular culture archivist Michael Erlewine as a guide for consumers. Its first reference book was published the following year. When first released onto the Internet, AMG predated the World Wide Web and was first available as a Gopher site.

AMG headquarters is located in Ann Arbor, Michigan, United States.

AllMusic's database, which is licensed and used in point-of-sale systems by some music retailers, includes:

AllMusic also claims to have the largest digital archive of music, including about six million digital songs, as well as the largest cover art library, with more than half a million cover image scans.

The AllMusic database is also used by several generations of Windows Media Player and Musicmatch Jukebox to identify and organize music collections. Windows Media Player 11 and the integrated MTV Urge music store have expanded the use of AllMusic data to include related artists, biographies, reviews, playlists and other data.

Albert Hammond OBE (born 18 May 1944) is an English singer, songwriter and record producer from Gibraltar.

Hammond was born in London, England, where his family had been evacuated to from Gibraltar during World War II. His family returned to Gibraltar shortly after his birth, and there he grew up. In 1960, he started in music with Gibraltarian band 'The Diamond Boys', which had no real commercial success, but played a part in Spain's introduction to popular music. The Diamond Boys performed at the first nightclubs in Madrid to stage modern bands alongside Spanish rock and roll pioneers such as Miguel Ríos. In 1966 Hammond co-founded the British vocal group The Family Dogg, scoring a UK Top 10 hit with "A Way of Life" in 1969.

He also wrote songs for others with frequent collaborator Mike Hazlewood. These include "Little Arrows" for Leapy Lee, "Make Me An Island" (1969) (which Hammond himself re-recorded in 1979, in a Spanish disco-style version), and "You're Such a Good Looking Woman" (1970) for Joe Dolan, "Gimme Dat Ding" for The Pipkins in 1970 (itself a cover from the Freddie and the Dreamers album, Oliver in the Overworld), "Good Morning Freedom" for Blue Mink, "Freedom Come, Freedom Go" for The Fortunes in 1971 and "The Air That I Breathe" which was a hit for The Hollies in 1974. In 1971. Hammond also sang on Michael Chapman's fourth album, Wrecked Again, and worked briefly with The Magic Lanterns on recordings of his and Hazlewood's songs and other material.

William Leonard Roberts II (born January 28, 1976), better known by his stage name Rick Ross (often stylized as RICK RO$$), is an American rapper. He derived his stage name from the drug trafficker "Freeway" Ricky Ross, to whom he has no connection. Ross founded the record label Maybach Music Group, on which he released his studio albums Deeper Than Rap and Teflon Don, Ross was also the first artist signed to Diddy's management company Ciroc Entertainment. In early 2012, MTV named Ross as the Hottest MC In The Game.

William Leonard Roberts II was born in Coahoma County, Mississippi. and raised in Carol City, Florida, near Miami. After graduating from Carol City Senior High School, he later attended the historically black college Albany State University on a football scholarship.

After being signed to Suave House Records, former label for rap duo 8Ball & MJG, he eventually signed a deal with Slip-n-Slide Records, which has been under the Def Jam umbrella since 2006. While signed to Slip-n-Slide, Ross toured with fellow rapper Trick Daddy and made guest performances on other Slip-n-Slide albums.