 Since forming in 1979, Gillis and drummer Kelly Keagy are the only members to have appeared in every incarnation of the band and all studio releases.However, since Keagy missed several shows for the first time in 2017, Gillis is the only Night Ranger member to have appeared at every live performance in the band's history.He has also played for Ozzy Osbourne and Fiona, and has released solo albums.