While judging the hugest Battle of the Bands in the history of Ooo, Finn hears a mysterious new song.
Guest Cast
Pendleton Ward
voices SnailJessica DiCicco
voices Flame PrincessAndy Milonakis
voices N.E.P.T.R.Miguel Ferrer
voices DeathAshly Burch
voices CelinaAshley Eriksson
voices Music HoleCast Appearances
Jeremy Shada
voices FinnJohn DiMaggio
voices JakeHynden Walch
voices Princess BubblegumNiki Hyun Yang
voices BMONiki Hyun Yang
voices Lady RainicornEpisode Discussion
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