Its membership comprises hundreds of music companies including all three `` major '' record companies in the UK ( Warner Music UK , Sony Music Entertainment ( UK ) , and Universal Music UK ) , and hundreds of independent music labels and small to medium-sized music businesses .
Its membership comprises hundreds of music companies including all four ` major ' record companies ( Warner Music Group , EMI , Sony BMG , and Universal Music Group ) , associate members such as manufacturers and distributors , and hundreds of independent music companies representing literally thousands of labels .