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