Scott Henderson: Guitar
Gary Willis: Bass
Kirk Covington: Drums
Scott Kinsey: Keyboards

American instrumental progressive fusion four piece, created in 1984 by Scott Henderson & Gary Willis. After releasing several albums with various musicians, Covington and Kinsey were added into the band in the early 90's.

The new band continued to release material, finally ending on their tenth, 'X', released in 2012, and subsequently branching off into solo careers.