"Akuyaku◇Kyosokyoku" (アク役◇協奏曲 Akuyaku◇Kyōsōkyoku, lit. "Villain Concerto") is an ending theme song for three episodes in the latter half of JoJo's Bizarre Adventure: Stardust Crusaders. The song is sung by the characters Oingo (Makoto Yasumura), Boingo (Motoko Kumai), and Hol Horse (Hidenobu Kiuchi), and is used as the ending for episodes featuring the characters together in place of the usual ending theme "Last Train Home".