The Tangerine Conspiracy
From the recurring "Mel's Rock Pile" skit on sketch comedy television series SCTV. A parody of teen dance shows, the 04/10/1984 episode has host Rockin' Mel Slirrup (Eugene Levy) showing a clip from 1969 where this band plays and Mel freaks out after being slipped spiked water. In the present, he presents the band again, only now they've renamed themselvs Happiness Unlimited, and Mel has acid flashbacks as they play.
Lineup: Vocals-Melissa Humphries (Catherine O'Hara), Drummer-Chuck Humphries (Martin Short), the rest of the band played by extras.