VELVET(Massive New Krew) VELVET (Tatsh Remix) Old Heaven GROOVE COASTER WAI WAI PARTY!!!!/수록곡 GROOVE COASTER for STEAM/수록곡 Massive New Krew BATTLE NO.1 GROOVE COASTER/수록곡 GROOVE COASTER ZERO/수록곡 GROOVE COASTER AC/수록곡 GROOVE COASTER/음반