The well-known faces behind some of the biggest songs in music
Alexandra Pollard
16:18 11th August 2015

It's no secret that many artists don't write their own songs. But there are some artists out there whose songwriting talents are so prolific, that they write for other musicians too. 

BBC 1Xtra claims up to 40% of rap lyrics aren't self-written - but that's not the only genre guilty of it. We've compiled a list of some of the most famous faces behind the biggest hits - find out which other rapper actually wrote 'Still Dre', as well as the UK singer behind a very patriotic Miley Cyrus hit.