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

full_context: Document 1: Planet X (Derek Sherinian album): Planet X is the first studio album by keyboardist Derek Sherinian, released in 1999 through Magna Carta Records. The album was devised after Sherinian left progressive metal band Dream Theater in January 1999. He then joined drummer Virgil Donati in forming a band also named Planet X, which released their own first album "Universe" in 2000. Guitarist Brett Garsed, who plays on "Planet X", would later return on the band Planet X's album "Quantum" in 2007.
Document 2: Oceana (album): Oceana is the seventh studio album by keyboardist Derek Sherinian, released on September 5, 2011 through Music Theories Recordings. After his recording sessions for the album, guitarist Joe Bonamassa posted on his official forum: "This session was one of the most challenging of my career. To be in the studio with Derek Sherinian and Simon Phillips [is] daunting. A huge thanks to Both Derek and Simon for getting me through it. I learned a lot. "Oceana" is a killer record. Highly recommended."
Document 3: Mythology (Derek Sherinian album): Mythology is the fourth solo album by keyboard player Derek Sherinian. Sherinian again draws upon some of the greatest talent from the worlds of rock and jazz music. Among the artists appearing on "Mythology" are jazz fusion player Allan Holdsworth (U.K., Soft Machine, Level 42), Steve Lukather (Toto), Simon Phillips (Toto, Jeff Beck, The Who), Zakk Wylde (Ozzy Osbourne, Black Label Society), Grammy award winner Steve Stevens (Billy Idol), Jerry Goodman (Mahavishnu Orchestra, Dixie Dregs), and a very rare guest appearance from guitarist John Sykes (Whitesnake, Thin Lizzy, Blue Murder).
Document 4: Joe Satriani: Joseph Satriani (born July 15, 1956) is an American instrumental rock guitarist and multi-instrumentalist. Early in his career, Satriani worked as a guitar instructor, with many of his former students achieving fame, such as Steve Vai, Larry LaLonde, Rick Hunolt, Kirk Hammett, Andy Timmons, Charlie Hunter, Kevin Cadogan, and Alex Skolnick; he then went on to have a successful solo music career. He is a 15-time Grammy Award nominee and has sold over 10 million albums, making him the biggest-selling instrumental rock guitarist of all time.
Document 5: Inertia (Derek Sherinian album): Inertia is the second studio album by keyboardist Derek Sherinian, released in 2001 through InsideOut Music. This album marks the beginning of Sherinian's longtime collaborations with drummer Simon Phillips as well as guitarists Steve Lukather and Zakk Wylde.
Document 6: The Attack (band): The Attack were a freakbeat/psychedelic rock band formed in 1966 around singer Richard Shirman (born 26 April 1949, London Died July 2017) The first line-up featured drummer Alan Whitehead from Marmalade, guitarist David O'List (later of The Nice) and John Du Cann (later of Andromeda and Atomic Rooster). Their first single "Try It" had also been recorded by The Standells and Ohio Express. They also released a version of "Hi Ho Silver Lining", a few days earlier than Jeff Beck. Richard Shirman was invited to be singer with Andromeda but he declined.
Document 7: The Yellow and Black Attack Is Back!: The Yellow and Black Attack Is Back! is a Stryper tribute album by Christian rock band Guardian. The album is a re-make of Stryper's debut EP "The Yellow and Black Attack" from 1984. This record was released in 1999. The cover-artwork is also based on Stryper's version, with the four missiles on it, featuring the initials of each band's member as it is shown on the original cover: "MS" stands for Michael Sweet, "RS" for Robert Sweet, "OF" for Oz Fox, and "TG" for Tim Gaines; here the initials are: "JR" for Jamie Rowe, "TP" for Tony Palacios, "KN" for Karl Ney, and "DB" for David Bach.
Document 8: Sons of Apollo: Sons of Apollo is an American progressive metal supergroup formed in 2017 and composed of Mike Portnoy, Billy Sheehan, Derek Sherinian, Jeff Scott Soto and Ron "Bumblefoot" Thal. Portnoy, Sheehan and Sherinian had already worked together at a short-lived, live instrumental project with Tony MacAlpine. Sherinian was asking Portnoy to be a drummer in a band full-time. Portnoy agreed when he had time for it.
Document 9: Yngwie Malmsteen: Yngwie Johan Malmsteen ( ; born Lars Johan Yngve Lannerbäck; 30 June 1963) is a Swedish guitarist and bandleader. Malmsteen first became known in the 1980s for his neoclassical metal playing style in heavy metal. In 2009, "Time" magazine rated Malmsteen as among the 10 greatest electric guitar players of all time.
Document 10: 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.
Document 11: Black Utopia: Black Utopia is the third solo album by keyboard player Derek Sherinian. In addition to the returning members Zakk Wylde, Simon Phillips and Steve Lukather, three new musicians joined Sherinian: bass guitarist Billy Sheehan and guitarists Yngwie Malmsteen – with whom Sherinian had toured in 2001 – and Al Di Meola. "One of the highlights of my career was flying to Miami to produce Yngwie, and the next day Al Di Meola - all for my record!" The song "Axis Of Evil", (co-written with KISS drummer Eric Singer), has Zakk Wylde and Yngwie Malmsteen in a guitar duel. "Black Utopia" was the beginning of an ongoing collaboration with drummer Brian Tichy, and album cover artist Mattias Noren. "Black Utopia" is Sherinian's best selling solo record to date.
Document 12: Attack! Attack!: Attack! Attack! were a Welsh rock band from Caerphilly and Aberdare, formed in 2006. They released their eponymous debut album in 2008, with a second album "The Latest Fashion" released on 27 September 2010 through Hassle Records. Their third album, "Long Road to Nowhere", was announced for a 1 April 2013 release, and this was later confirmed to be their final release. The band played a farewell April/May headliner in 2013 and then split.
Document 13: War Eternal: War Eternal is the ninth studio album by Swedish melodic death metal band Arch Enemy, which was released on June 9, 2014 by Century Media. It is the first Arch Enemy album in 13 years since Wages of Sin to feature a new line-up; Alissa White-Gluz took over on vocals after former long-time vocalist Angela Gossow stepped down from vocal duties to be the band's business manager. Additionally, ex-Arsis guitarist Nick Cordle replaced Christopher Amott in 2012. Cordle ultimately left the band just before their European tour and was replaced by former Nevermore Guitarist Jeff Loomis
Document 14: 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.
Document 15: Red, White &amp; Crüe: Red, White & Crüe is an anthology album by the heavy metal band Mötley Crüe, released on February 1, 2005 by Mötley Records and charted at number 6 on The Billboard 200. To coincide with the album's release, the band reunited with drummer Tommy Lee, who left the band in 1999. Bassist Nikki Sixx commented on the band's reunion, comparing it to "seeing Mike Tyson fight. He probably won’t bite anyone’s ear off — but you’re there in case he does."
ground_truth: Dream Theater