Keiichi Sugiyama

Keiichi "!" Sugiyama (杉山 圭一) is a former Sega employee who has contributed music to various Sega games, including several Sonic titles. He is currently affiliated with Studiio Qareeb.

Music

 * Sonic Heroes
 * Complete Trinity: Sonic Heroes Original Soundtrax
 * Shadow the Hedgehog
 * Mario & Sonic at the London 2012 Olympic Games (Wii version)