There’s only one joke that I get in this laugh-filled video — and it’s not the one the audience is amused by. It’s the sight of a clean-shaven, short-haired Frank Zappa in a suit. (“That’s Zappa, Z-a-p-p-a?” the host asks. “Might we be familiar with any of your songs as of yet?”)

[youtube http://youtu.be/Ql_3LS_B4q0%5D

He’s so cutely seriously about the sounds the bicycle can make and the improvised concerto they’re going to play: “You’re supposed to express yourself freely,” he says.

[youtube http://youtu.be/Ho37arU5-2g%5D

“Try to refrain from musical tones” is the instruction he gives. At around 1:45 the music actually starts:

[youtube http://youtu.be/Vip0H-I8pTg%5D

We have only five words: new Grist List theme song.

H/t Coudal Partners Blended Feed