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.
Jonny Greenwood Jonathan Richard Guy Greenwood (born 5 November 1971) is an English musician and the lead guitarist and keyboardist of the alternative rock band Radiohead. A multi-instrumentalist, Greenwood also plays instruments including the bass guitar, piano, viola, and drums, and is a prominent player of the ondes Martenot, an early electronic instrument. He works with electronic techniques such as programming, sampling and looping, and writes music software used by Radiohead. He described his role in the band as an arranger, helping to transform singer Thom Yorke's demos into full songs. He has been named one of the greatest guitarists of all time by publications including the "NME," "Rolling Stone" and "Spin".