The document discusses the "Big Four" major record labels in the UK - Sony Music, EMI, Universal, and Warner Music Group. It provides examples of some of the popular artists signed to each label, noting they come from various genres and include acts such as Coldplay, Iron Maiden, and Sex Pistols for EMI; Metallica, Nine Inch Nails, and Slipknot for Warner; AC/DC, Beyoncé, and Foo Fighters for Sony; and Taylor Swift, Justin Bieber, Lady Gaga, and Eminem for Universal.