So 40 bands walk into a radio station… no, this surprisingly isn’t the start of some dumb music joke. As part of a new a comedy sketch orchestrated by Australian radio station triple j, a ton of musicians gathered together to write the “ultimate Hottest 100 song” before the launch of the broadcaster’s year-end Hottest 100 countdown. Cameos include a super-disinterested Lorde, Disclosure, Alt-J, Rick Astley (!), Skrillex, Steve Aoki, Diplo, Ben Folds — who offers to “tinkle the ivories” — First Ait Kit, Reggie Watts, and more. Watch it above.