EMI Group Limited was a British transnational conglomerate founded in March 1931 in London. At the time of its acquisition by Universal Music in 2012, it was the fourth largest business group and record label conglomerate in the music industry, and was one of the "Big Four" record companies. Its labels included EMI Records, Parlophone, Virgin Records, and Capitol Records, which are now referenced under Universal Music due to their acquisition with the exception of Parlophone, as it is now owned by Warner Music.

Sony Music Publishing (US) LLC is the largest music publisher in the world, with over five million songs owned or administered as of end March 2021. US-based, it is part of the Sony Music Group, which is itself owned by Sony Entertainment. The company was formed as Sony/ATV in 1995 by the merger of the original incarnation of Sony Music Publishing and ATV Music, which was owned by late entertainer Michael Jackson. Jackson had purchased ATV Music, which included the Lennon–McCartney song catalog, in 1985.