DELTARUNE - Rude Buster (Battle Theme) Acapella,Music,deltarune,rude buster,acapella,a cappella,smooth mcgroove,song,theme,battle,music,vocal,choir,singing,An original a-cappella arrangement of "Rude Buster", the battle theme from DELTARUNE. Out of all the great songs in this game, Rude Buster blew... / Undertale music :: Undertale :: фэндомы :: Smooth McGroove :: Kris (Deltarune) :: Undertale персонажи :: Susie (Deltarune) :: Lancer (Deltarune) :: Deltarune :: Undertale видео