Funkadelic

Funkadelic's self-titled debut may have touched upon drug-induced acid rock, but on their 1970 follow-up, Free Your Mind and Your Ass Will Follow, the band blows the door off its hinges. Look no further than the album-opening ten-minute title track - perhaps the most spaced out composition witnessed by rock and roll since the rolling stones' late-'60s psychedelic-phase - for the proof.