Question: What English-American heavy metal band active from 2006 to 2010's drummer did Greg Hampton form a new project with in 2011?

full_context: Document 1: Seventh Star: Seventh Star is the twelfth studio album by English rock band Black Sabbath, released in January 1986. The release came at a difficult time as the group had just finished a highly contentious tour, experiencing conflicts within the band. With guitarist and songwriter Tony Iommi being the sole original member left, musicians Geoff Nicholls, Eric Singer, and Dave Spitz contributed to the album, playing keyboards, drums, and bass, respectively. Glenn Hughes, ex-Deep Purple bassist and vocalist, was
Document 2: Adam Hamilton (musician): Adam Hamilton is a Los Angeles-based music producer, songwriter, and session musician. Hamilton was the bass guitarist of glam metal band L.A. Guns from 2001 through 2007. He also played drums for 1990s alternative rock band Joe 90, and worked as session drummer for alternative/neo-psychedelic band The Brian Jonestown Massacre. Hamilton is a multi-instrumentalist who plays guitar, bass guitar, keyboards, and drums.
Document 3: Heaven &amp; Hell Tour: The Heaven & Hell Tour was the ninth world concert tour by Black Sabbath between April 1980 and February 1981 to promote their 1980 studio album, "Heaven and Hell." The tour marked the band's first live shows with vocalist Ronnie James Dio, who replaced original vocalist Ozzy Osbourne the previous year; drummer Vinny Appice, who replaced original drummer Bill Ward in the middle of the tour's North American leg after Ward suddenly left the band due to personal issues; and keyboardist Geoff Nicholls, who played keyboards on the "Heaven and Hell" album and accompanied the band on this tour as a sideman. For a portion of the North American tour, which was popularly known as the "Black and Blue Tour", Black Sabbath co-headlined with Blue Öyster Cult, with whom they shared a manager, Sandy Pearlman. The arrangement reportedly set attendance records but caused friction between the two bands as well as between Black Sabbath and Pearlman.
Document 4: Black Sabbath Reunion Tour: The Reunion Tour was a concert tour by heavy metal band Black Sabbath, celebrating the band's 2012 reunion and in support of their album "13", which was the group's first album to feature their original singer Ozzy Osbourne since 1978's "Never Say Die!" and original bassist Geezer Butler since 1994's "Cross Purposes".
Document 5: Doug Grean: Doug Grean is an American record producer, audio engineer, guitarist, based in Los Angeles. He has worked with artists Sheryl Crow, Ricki Lee Jones, Glen Campbell, Scott Weiland, Slash, Velvet Revolver, Stone Temple Pilots, The Crystal Method, Tim McGraw, Cyndi Lauper, Annabella Lwin (Bow Wow Wow), Corey Glover (Living Color), Camp Freddy, DJ Hurricane and John Taylor (Duran Duran). Grean was formerly the lead guitarist and touring musical director for Scott Weiland and the Wildabouts. Some of Grean's television appearances with Weiland include: VH1 Legends, Last Call with Carson Daly, The Tonight Show with Jay Leno, and the Grammy awards with Velvet Revolver as keyboardist, performing "All Across the Universe" with Stevie Wonder, Norah Jones, Bono, Steven Tyler, Brian Wilson, and Alison Krauss.
Document 6: Ronnie James Dio: Ronald James Padavona (July 10, 1942May 16, 2010), better known by his stage name Ronnie James Dio, was an American singer, songwriter, and musician. He fronted and/or founded numerous groups including Elf, Rainbow, Black Sabbath, Dio, and Heaven & Hell. He is credited with popularizing the "metal horns" hand gesture in metal culture and was known for his medieval-themed lyrics. Dio possessed a powerful versatile vocal range capable of singing both hard rock and lighter ballads.
Document 7: Geezer Butler: Terence Michael Joseph "Geezer" Butler (born 17 July 1949) is an English musician and songwriter. Butler is best known as the bassist and primary lyricist of the heavy metal band Black Sabbath. He has also recorded with Heaven & Hell, GZR, and Ozzy Osbourne.
Document 8: Eric Singer Project: Eric Singer Project is an American rock band. ESP was founded in the 1990s by Eric Singer, drummer for such acts as Lita Ford, Black Sabbath, Badlands, Alice Cooper, and Kiss, along with Bruce Kulick (Kiss, Grand Funk Railroad) on guitar, John Corabi (The Scream, Mötley Crüe, Ratt) on guitar and bass, and Karl Cochran on guitar and bass. Vocals duties were shared by Eric, John, and Karl.
Document 9: 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.
Document 10: The Black Sabbath Story, Vol. 2: The Black Sabbath Story Vol. 2 - 1978-1992 is a documentary video about the biography of the heavy metal band Black Sabbath. It is the follow-up to "The Black Sabbath Story Vol. 1 - 1970-1978", and it's about their story from the leaving of Ozzy Osbourne to the recording of Dehumanizer, discussing the line-up changes Black Sabbath experienced during the period between 1978 and 1992. In addition to comments by the storic members Geezer Butler and Tony Iommi, there are interviews with other people that have been in the band, like Ronnie James Dio, Ian Gillan, Cozy Powell and Vinny Appice. There are also live clips and video clips of various songs. In 2002 a DVD Version has been released, with 19 min of never-seen footage, not included in the previous VHS Version.
Document 11: Greg Voelker Rack System: The Greg Voelker Rack System is a unique drum rack used by former Megadeth drummer Nick Menza, David Beal drummer for Joe Cocker, Julian Lennon, Honeymoon Suite, Rod Morgenstein drummer for Dixie Dregs and Winger and was voted by Modern Drummer Magazine's "Most Popular Progressive Rock Drummer", Michael Foster, drummer for FireHouse, and Whitesnake drummer Tommy Aldridge. It was designed for its lack of stands, which serves for a flashy live look and prevents a drummer/band from knocking over cymbal/drum stands. Designed by Greg Voelker, the rack was made out of Stainless Steel and was attached to a built in riser which allows the bass drums to float. Thereby, giving the drummer more mounting flexibility well as avoiding the clutter of stands on stage. The racks mentioned were custom made for each drummer. A "Standard" rack by Greg Voelker was distributed through Premier drums from the late 1980s to the early to mid-1990s.
Document 12: Greg Chaisson: Greg Chaisson is a bass guitarist, singer, songwriter, and producer who has played in various bands, most notably Badlands (which featured guitarist Jake E. Lee, formerly of Ozzy Osbourne, vocalist Ray Gillen, and drummers Eric Singer and Jeff Martin) and he also played in Jake E. Lee's Red Dragon Cartel. He has also played and recorded with Surgical Steel, Steeler, Legs Diamond, Blindside Blues Band, Die Happy, Red Sea, Pat Travers, and Darrell Mansfield among others. He resides in Phoenix, Arizona, with his wife and children where he coaches and teaches baseball and manages Bizarre Guitar & Drum. Additionally, he plays in an original band named Kings of Dust which features members Michael Beck (vocals), Ryan McKay (guitar), and Jimi Taft (drums). In 1994, he released a solo album titled "It's About Time".
Document 13: Dio discography: The following is a comprehensive discography of Dio, an American heavy metal band led by vocalist Ronnie James Dio. Dio was formed in 1982 after Ronnie James Dio and drummer Vinny Appice left Black Sabbath. The band went through frequent personnel changes. The final line-up consisted of Dio (vocals), Craig Goldy (guitars), Rudy Sarzo (bass), Simon Wright (drums) and Scott Warren (keyboards).
Document 14: Heaven &amp; Hell (band): Heaven & Hell were an English-American heavy metal band active from 2006 to 2010. The band was a collaboration featuring Black Sabbath founder members Tony Iommi and Geezer Butler along with former Black Sabbath members Ronnie James Dio and Vinny Appice.
Document 15: Greg Hampton: Greg Hampton is a producer, guitarist, singer, and songwriter, who has worked on such albums as Alice Cooper's "Along Came a Spider," Tommy Bolin's "Whips and Roses," and Lita Ford's "Wicked Wonderland." Hampton has also appeared as the member of several groups over the years, including Science Faxtion (with Bootsy Collins and Buckethead), the New Czars (with Adrian Belew), and Razorball (with Reeves Gabrels). In 2011, it was announced that Hampton had formed a new project, 9 Chambers, with ex-Monster Magnet guitarist Ed Mundell, Gov't Mule bassist Jorgen Carlsson, and ex-Black Sabbath/Dio/Heaven & Hell drummer Vinny Appice.
ground_truth: Heaven & Hell