The "Hard Day's Pete" episode (16 January 1994) attracted real musicians Syd Straw (as math teacher Miss Fingerwood) and Marshall Crenshaw (as a meter reader), specifically. They combine forces with little Pete (Danny Tamberelli) and another kid (on drums) to briefly form The Blowholes to recreate a song little Pete heard by another, unnamed garage band. The unnamed band was played by Polaris, a.k.a. Miracle Legion, who wrote and performed the show's theme, "Hey Sandy."
A Polaris three song promotional cassingle was once offered via cereal box. "Blowhole" was a favorite insult used by little Pete.
See also Kreb Zepplin.