Wow, that brings back memories.
OK, same time period, completely different music, but I've been listening to these guys for decades: The Bonzo Dog Band. Been meaning to post something, and their recent use in an episode of "Young Sheldon" pushed me to do it. What to choose, though? Well, this one has some film, so:
Here,BTW, is the piece used in the "Young Sheldon" episode: