Bruce Haack, the creative mind behind “The Electric Lucifer” appeared on Mr. Roger’s in 1968.
Some kind soul has uploaded the footage to youtube.
This is a must watch for fans of trippy, avant garde music, and synths in general. (Haack invited all manner of electronic doodads, including one of the earliest vocoders.)
When you’re done, check out this track, from The Electric Lucifer, to see what all the fuss is about.