"Waiting for the Man" is arguably one of the greatest rock songs of all time, and unarguably the best song ever about scoring drugs (except maybe "I Got 5 On It").
Here's an early recording.
The Velvet Underground, 1967
Former VU bandmates Lou Reed & John Cale performing it live in Paris, 1972
David Bowie f. Mick Ronson on guitar, live in Santa Monica, 1972
Belle and Sebastian, live in Belfast, 2001
Man I could really go for some heroin right now.