As "The Singing Bailiff" in Da Buzzy & the Greasy Fuzz (2002),
an insane CRIME SCENE musical!.

Insane because a) it was an absolutely insane storyline and b) because the idea of getting 10 or 15 folks (not necessarily musical theater folks either!) to learn a bunch of songs and dances each and every week to be performed once-ever is absolutely insane. And it was a blast.