Okay, I admit it: this was the most recent post at the top of tomtiddler1's channel. It's late and I'm tired.
The first couple of minutes are pretty rote, especially for the early 1980's -- Zappa's a genius but has achieved modest commercial success and Valley Girl is his most popular song ever -- but once they get into the dub room it's more fun.
And neat bits at the end about Dweezil, who Frank calls "a very excellent guitar player, even though he's only twelve years old" -- not idle praise.