From the joyful exultations of Sly Stone to the fire and brimstone of Curtis Mayfield, we look at 10 classics from when soul musicians started dropping acid.
Formerly a folk group who sang back-up for Dylan, the Chambers Brothers rebuilt themselves in 1967, hooking up with Moby Grape producer David Rubinson and yowling "My soul's been psychedelicised!" The abbreviated version was a hit but it’s more mind-blowing in its full 11-minute incarnation, spiralling down an echoey acid-rock rabbithole for so long that the song’s return to normality in the final two minutes feels like waking from a dream.
The 12-minute centrepiece of their 1967 album Dance to the Music isn't the best advertisement for Sly's songwriting but it showcases the band at their most expansive and uninhibited, tightly drilled yet anarchic in spirit, seemingly trying to explore every idea at once while keeping you dancing. It takes old-fashioned dance-craze R&B and James Brown showmanship through the looking glass via a disorientating array of studio trickery.