For the original "Sonic the Hedgehog", Sega commissioned Masato Nakamura, bassist and songwriter of the J-pop band Dreams Come True, to compose the soundtrack. Nakamura returned to compose "Sonic 2" soundtrack. Dreams Come True owns the rights to Nakamura's score, which created problems when the "Sonic Spinball" team used his "Sonic" theme music without permission. For "Sonic CD", two soundtracks were composed; the original, featured in the Japanese and European releases, was composed by Naofumi Hataya and Masafumi Ogata, while the North American score was composed by Spencer Nilsen, David Young, and Mark Crew.