This wavy single from Canadian singer-songwriter River Tiber preceded his debut album Indigo. The song pairs River Tiber’s use of pulsating synths with a crashing drum pattern that heightens the track’s main theme: the effects an acid trip.

In the mid-1960s, “acid-test” was a phrase used to describe a party where people would meet to drop acid and revel in the many lusts to which the song’s opening alludes.