And the band kept playing on

EVERY TRAIN NEEDS A BAND EVERY MAN NEEDS A WOMAN EVERY KEYBOARD NEEDS A CAPSLOCK BUTTON

Very funny. I like it!

Ah, it's ok, it's ok... it's just a dreadful pun. See, "jumping on the bandwagon" is an expression (meaning "to do what everyone else is doing"). But the bandwagon is also the name of the train wagon that carries the music band. Here Godzilla is jumping on the bandwagon quite literally ^^;;;;