Atomic Soul is Symphony X's lead singer Russell Allen's debut solo album. It was released on April 26, 2005. The album is different from Symphony X's harder, more progressive sound, and has been dubbed by many, including Allen himself, as "Hard Rock". The album was released in 2005 on the InsideOut Music label. Allen played bass and keyboards on most tracks, along with vocals, but some of the tracks feature guests Robert Nelson on drums, Brendan Anthony and Jason Freudberg on guitars, Larry Salvatore on bass and Jens Johansson on keyboards. Also Allen's bandmates Michael Romeo and Michael Pinnella, from Symphony X, are featured on the album.