Steven Tyler, Keith Richards, Courtney Love: Music Stars Before And After Drugs

"I blew $20 million. I snorted my Porsche, I snorted my plane, I snorted my house in that din of drugs and booze and being lost."

It hasn't always the case, but sometimes the words that come out of Aerosmith frontman Steven Tyler's mouth are worth listening to.

This week – as the above quote reveals – Tyler has been discussing his battle with drugs, so what better opportunity to take a look at some other music stars who should probably have taken note.

Our round-up of musicians before and after drugs includes the likes of Amy Winehouse, Pete Doherty and Ozzy Osbourne, as well as Rolling Stones guitarist Keith Richards, Courtney Love and late Nirvana frontman Kurt Cobain.