Attack!! is an album that included the keyboardist from which group from 1994-99?
Derek Sherinian Derek Sherinian (born August 25, 1966) is an American keyboardist who has toured and recorded for Alice Cooper, Billy Idol, Yngwie Malmsteen, Kiss, Steve Vai, and Joe Bonamassa. He was also a member of Dream Theater from 1994–99, is the founder of Planet X and also one of the founding members of Black Country Communion and Sons of Apollo. He has released seven solo albums that have featured a variety of prominent guest musicians, including guitarists Slash, Yngwie Malmsteen, Allan Holdsworth, Steve Lukather, Joe Bonamassa, Billy Sheehan, Zakk Wylde and Al Di Meola.
Andrew Pryce Jackman Andrew Pryce Jackman (13 July 1946 – 16 August 2003) was an English keyboardist, arranger and composer. He was in The Syn with bassist Chris Squire (later of Yes). Jackman subsequently worked on Squire's solo album "Fish Out of Water" (1975), his single "Run with the Fox" (1980), on the Yes album "Tormato" (1978) and on "The Steve Howe Album" (1979).