Hiroshi Watanabe, a.k.a Quadra, (1971 - ) is japanese techno musician. He also composed a few songs for the BEMANI series. Contents Discography: QUADRA * Sketch from a Moment (1997) * beatmania (1998) - The collection album of his work in beatmania series. Hiroshi Watanabe * Tiny Balance (2004) * Genesis (2007) KAITO * Special Life (2002) * Special Love (2003) - Beatless edit version of Special Life. * Hundred Million Light Years (2006) Read more on Last.fm