Sex and drugs - they go hand in hand with rock n' roll, as we know all too well. While a sexy number can be veiled with notions of love, songs about substances are often a little bitter hidden.
From 'Lucy in the Sky With Diamonds' to 'The Needle and the Damage Done', some of the most notable songs of the last century have been influenced by heroin, LSD, marijuana or all three at the same time.
Artists have drawn inspiration from their love of narcotics to, ultimately, their descension into addiction, detailing hallucinations, paranoia or just feeling really, really good.
Here are 11 well-known tracks you may not have known are, too, about drugs. Inevitably, most of them are odes to heroin.