The document discusses four major record labels - EMI, Sony BMG, Universal Music Group, and Warner Music Group. It provides details on their market shares, associated labels, ownership histories, and genres. Some key details include: - EMI had a market share of 9.62% and was formerly owned by Citigroup, Terra Firma Capital Partners, and Time Warner before being sold to Universal and Warner Music. - Sony BMG (now Sony Music Entertainment) had a 29.29% market share and was a joint venture between Sony and Bertelsmann before Sony bought out Bertelsmann. - Universal Music Group has a 29.85% share and is owned by Viv