Question: Attack!! is an album that included the keyboardist from which group from 1994-99?

Context paragraphs:
SKAndalous All-Stars: The SKAndalous All-Stars are a ska band, composed of members of The Slackers, the Skatalites, Mephiskapheles, the Stubborn All-Stars, Agent 99, Ruder Than You, Sic & Mad, The Excalibur, Cocktaillica, The Hurtin' Buckaroos, Living Colour, Perfect Thyroid, the Cycle Sluts from Hell, and The Klezmatics, and is led by Slackers frontman Vic Ruggiero.  Considered one of the first ska supergroups, the Skandalous All Stars built their reputation on ska and reggae stylized versions of popular rock and pop tunes.  Their first two albums—"Hit Me", released in 1997, and "Punk Steady", released the following year—included dance-inspiring interpretations of songs by the Sex Pistols, The Clash, Blondie, Patti Smith, the Ramones, Kiss, Nirvana, Radiohead, Stevie Wonder, and White Zombie.  With their third album, "The Age of Insects", released in 1999, the group began focusing on the original songs of keyboardist and vocalist Ruggiero.

GoodThunder: GoodThunder was a psychedelic/progressive rock/hard rock band that formed in 1972 as James Cahoon Lindsay (vocals and percussion), John Desautels (drums), David Hanson (guitars and vocals), Bill Rhodes (bass), and Wayne Cook (keyboard).  Other members include Fritz Richmond (engineering), Rick Rodrigues (cover art), Lorrie Sullivan (photography), and Robert Heimall (art direction).  Not much is known about this band except the information you find on the back cover of their first and only album.  If you don't listen to it, the only thing that stands out on this album is the fact that famous producer Paul A. Rothchild (who produced albums by The Doors, Janis Joplin, and Rush just to name a few) produced this album.  Most of the core band went on to join AOR band L.A. Jets, then most of L.A. Jets went on to record under the name 1994.  Both L.A. Jets and 1994 included GoodThunder members John Desautels, Bill Rhodes, Terry Linvill, and included singer/songwriter Karen Lawrence.  Wayne Cook went on to play keyboards with Steppenwolf and co-wrote the instrumental "Lip Service" from the Skullduggery album.  Wayne Cook also played keyboards with Player on their first two albums, he filled in as keyboardist for Alice Cooper for a few shows, but was never a permanent member.

Michael Gregor (musician): Michael Gregor (also known as Silenius) is an Austrian musician who is currently in the bands Amestigon (since 1998) as vocalist, Kreuzweg Ost as programmer, and Summoning as vocalist, keyboardist, and bassist; the two latter bands are bands that he is a founding member of.  He supplied vocals for Abigor from 1994 to 1999 and appeared on seven of Abigor's releases.  Silenius was vocalist and keyboardist for Pazuzu and played on the band's split album and debut album.  Along with fellow Summoning bandmate Richard Lederer, Silenius also used to be a member of Die Verbannten Kinder Evas, serving as a vocalist and a keyboardist.  Silenius has recorded music for a project called "Mirkwood", of which no material has yet been released.

No Doubt: No Doubt is an American rock band from Anaheim, California, that formed in 1986.  Since 1994, the group has consisted of vocalist Gwen Stefani, bassist and keyboardist Tony Kanal, guitarist and keyboardist Tom Dumont, and drummer Adrian Young.  Since the mid-1990s in live performances and the studio, they have been supported by keyboardist and trombonist Gabrial McNair and keyboardist and trumpeter Stephen Bradley.

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.

Mirror (Flying Saucer Attack album): Mirror is the fourth studio album by Flying Saucer Attack, released by FSA Records and Drag City in 2000.  Whilst battling several years of depression, Dave Pearce recorded "Mirror", his second solo album using the Flying Saucer Attack name, with help from collaborator Rocker from 1997–99.  Considered the band's most accessible and melodic album, "Mirror" builds upon the sampling and noise approaches of "New Lands" (1997), exploring electronic experimentation with influences from drum and bass and industrial music, in addition to the lo-fi noise pop and gentle folk music he and the band had built their name on.

Attack!!: Attack!!  is the fourteenth studio album by guitarist Yngwie Malmsteen, released on 15 October 2002 through Red Ink Records.  The album is the first to feature singer Doogie White on lead vocals, along with keyboardist Derek Sherinian.

Room V: Room V is the fifth album by the progressive metal group Shadow Gallery, released in 2005 (see 2005 in music).  It continues the story started in "Tyranny", picking up after Tyranny's Act II.  It is the band's first album not featuring longtime keyboardist Chris Ingles, although he did have input in the album's writing process before his departure.  It is also their last album to feature longtime lead vocalist Mike Baker, who died of a heart attack in 2008.

Clarke Center: The Clarke Center is an organization at Dickinson College in Carlisle, Pennsylvania, USA, which organizes campus lectures, symposia, and events.  A gift from trustee Henry D. Clarke, Jr. helped establish the Center in 1994.  Clarke Center programming typically focuses on interdisciplinary issues and aims to enrich students' academic experiences outside of the classroom.  Each year, events center on an annual theme.  Past themes include:Democratization (1994–95), Race & Ethnicity: The Politics of Identity (1995–96), Environmental Sustainability (1996–97), Citizenship (1997-98), Education, Power, and Responsibility (1998–99), Corporations and Globalization (1999-2000), War (2000-01), Crossing Borders (2001–02; 2002–03), For Richer, For Poorer; Globalization Under Attack (2003–04), Religion and Political Power (2004–05), and Memory (2005-2006).  Student project managers make up part of the Clarke Center staff, and design publicity for events, write campus news articles and press releases, interview speakers, and staff events.  The Clarke Center has hosted over 400 speakers since its founding, and all events are free and open to the public.

Chance (band): Chance was an American country music group composed of Jeff Barosh (vocals, fiddle, steel guitar, sax, guitar), Mick Barosh (drums), John Buckley (guitar), Jon Mulligan (keyboards) and Billy Hafer (bass).  The group recorded one album for Mercury Nashville in 1985 which included the Top 40 singles "To Be Lovers" and "She Told Me Yes."  Previously known in the south Texas area as "Texas Pride", they changed their name to "Chance" after securing a record deal and gaining national recognition in the mid-1980s.  Keyboard player Jon Mulligan was killed by a drunk driver in 1987 on the way home from one of the group's local Texas concerts.  Keyboardist Clay Hemphill filled the duty on the keys from 1987 to 1993 during the transition years from "Chance" to "Jeff Chance".  Bill Hafer retired in 1993 to pursue his custom flight case business, "Hafer Case".  Bruce Repka joined the band in 1993 on keyboards & steel.  Fred Rice (bass) came aboard, but left a year later.  Darrell Jozwiak filled the role as bass guitarist from 1994 until the band played their last gig together in October 1995.

Supporting paragraphs: Attack!! Derek Sherinian
Answer: Dream Theater