The Big 3

EMI were bought out buy Universal. Making The Big 4, The Big 3, which now consist of Sony (BMG) (21.5%), Warner Brothers (11.3%) and Universal (39%). Independant labels make up the rest.

Sony (BMG)
A global record group founded on March 3rd 2004.
Sony (BMG) was a joint 50/50 company between Sony music entertainment and Berteismann music group (BMG.
It owned and distributed record labels such as Epic Records, Columbia records and RCA.
On August 5th 2008 Sony Corp agreed to buy Berteismann 50 percent stake for $1.2 billion to get full control. The music company was renamed Sony Music Entertainment Inc.

Sony's labels include: RCA label group.
Sony CGM
Columbia
Syco

Some current artists include:
Justin Timberlake
Foo Fighters
Kings Of Leon
Bruce Springsteen
Glasvegas
The View
The Script

Warner Brothers
WMG is a global leader in national and international repertoir and home to some of the best known labels in the music industry.
In addition to its Us labels, WMG operates in numerous affiliates and licenses in more than 50 countries.
Their recorded music business includes growing artist service business which offers artist management, merchandising, touring, fan clubs, ticketing sponsherships and brand endorsements and numerous third party solutions that facilitate the sale of music-based content directly to the consumers.
Warner/Chappell music is one of the world's leading music publishers with a catalogue of more than one million songs from more than 65,000 songwriters.
In recent years they've grown to become the world's third largest recorded music business and third largest music publishing business, one of the music industry's most successful companies.