This article is about the train car. Did you mean the episode?
The Musical Car is a car that first appears in the episode "The Musical Car." This car was an auditorium type car, where they would host different types of musicals. The musicals are performed by the denizens, containing a variety of species including the Comedy Mask, the Tragedy Mask, Playbill People, Stage Light People, Hand Fan People, and Glove People. The car's last musical was called "Empathy Goes", apparently written by Jesse Cosay according to their entrance sign. Right as the play was finished, the Apex raided the car and presumably killed most of the denizens.