Prior to joining Dio, Scott Warren was a member of the groups Warrant, Keel and Berlin among others. He is a self taught keysman who began playing at age 6. Later he trained professionally at Dick Grove School of Music.

Scott joined Dio to play keyboards on the Strange Highways release in 1994. He has been a member of Dio ever since.

His most notable work with the band would have to include his keyboard solo on the recent Killing The Dragon album on a track titled Before The Fall.

(Source: http://www.ronniejamesdio.com/bio_scott.asp)