Warner Music Group (WMG) is the third-largest of the "big four" major record labels, the others being Sony BMG, EMI, and Universal.

Warner Music Group also has a publishing arm, Warner/Chappell Music, which dates back to 1929, when Jack Warner, president of Warner Bros. Pictures Inc., founded Music Publishers Holding Company (“MPHC”) to acquire music copyrights as a means of providing inexpensive music for films. Amongst the historic compositions in which the publishing rights are controlled by WMG are the works of Cole Porter, Richard Rodgers and Lorenz Hart. Its printed music operation, Warner Bros. Publications, was sold to Alfred Publishing on 2005-06-01.

History

WMG's roots in what became Time Warner date back to the founding of Warner Bros. Records as a division of the Warner Bros. movie studio in 1958, in reaction to one of its contracted actors, Tab Hunter scoring a hit for Dot Records, a division of Paramount Pictures. In 1963, Warner Bros. purchased Reprise Records, founded by Frank Sinatra 3 years earlier so that he could have more creative control over his recordings. Reprise was operated in conjunction with WBR.

After Warner Bros. was sold to Seven Arts Productions in 1967 (forming Warner Bros.-Seven Arts), it purchased Atlantic Records, now WMG's oldest label. For the next 2 years, Atlantic and its subsidiary label Atco Records were operated separately from WBR and Reprise.

In 1969, Warner Bros.-Seven Arts was sold to the Kinney National Company. Kinney (later to be known as Warner Communications) combined the operations of all of its record labels. The following year, Kinney bought Elektra Records and its sister label Nonesuch Records, and assembled the labels into a group known as Warner-Elektra-Atlantic, also called WEA for short, or Warner Music Group. The WEA name was also used as a label outside the U.S.

In the mid-1970s, WEA expanded by purchasing Asylum Records and Sire Records. The former was merged with Elektra to form Elektra-Asylum, though the separate names would still be used as well. The latter became a sublabel of WBR in the meanwhile.

WEA's labels also distributed a number of otherwise independent labels. For example, Warner Bros. distributed Straight Records, DiscReet Records, Bizarre Records, Bearsville Records, and Geffen Records (the latter was sold to MCA in 1990). Atlantic Records distributed Swan Song Records.

In 1987, it was announced that Warner Communications was to merge with Time Inc. to form Time Warner, a transaction which was completed in 1990.

Atlantic started 2 new subsidiary labels in the early 1990s - EastWest Records (which absorbed Atco Records) and Interscope Records. The former was later absorbed into Elektra, and the latter was also sold to MCA in 1995.