It was part of an anthology series, as I recall. The plot involved a journeyman guitarist called in to a session for a really popular band – the Raging Kings, I believe was the name. During the session, the band’s regular guitarist quits/gets fired, and the journeyman is on top of the world as his replacement until the band resolves its differences and gets back together before the session has even ended. Not a brilliant episode, but at the end, when the journeyman settles back into his everyday existence, I couldn’t help but imagine what kind of “You wouldn’t believe it if I told you” story he’d be telling people.
The song “16 Tons of Monkeys” by Tonio K. might have been used as the song the journeyman played on, because I remember a line about “16 tons of questions for the teacher.”
And Chad Smith of the Red Hot Chili Peppers might have been the band’s drummer.