The Flying Opera is a boxed set containing two DVDs and two CDs by the German power metal band Avantasia, released in March 2011.
 Avantasia evolved from being a side-project of Edguy vocalist Tobias Sammet to a full-fledged band touring all over the world.
 The tracks of the set were recorded live during their first world tour in 2008, in support of the album "The Scarecrow".
 The DVD contains also a documentary of the tour and various video clips.
Certifiable: Live in Buenos Aires is a live album and concert video by The Police.
 It was recorded in December 2007 during the band's reunion tour and was released in November 2008.
 The album was released in the US exclusively through Best Buy.
 The album has a number of releases including a four disc version containing two CDs and two DVDs.
 The two CDs contain the live album from River Plate Stadium in Buenos Aires, Argentina.
 The first DVD contains the 109-minute wide-screen concert presented in Dolby Surround and Stereo.
 The concert film was directed and produced by Jim Gable and Ann Kim, of Graying & Balding, Inc.
 The second DVD contains the 50-minute bonus feature, "Better Than Therapy," directed by Stewart Copeland's son Jordan Copeland, detailing The Police's reunion with behind-the-scenes interviews from the band and road crew, plus two photo galleries of The Police on tour: one shot by guitarist and photographer Andy Summers, and one by photographer Danny Clinch.
 The DVDs were also released on Blu-ray format.
 A triple vinyl format was also released that contained a digital download of the concert.
B.O.X ~Best of X~ is a compilation box set released by X Japan on March 21, 1996.
 It contains two CDs, a VHS tape and a T-shirt from the "Violence and Jealousy Tour".
 The album reached number 5 on the Oricon chart.
 It was re-released on December 1, 1996 in a different case without any extras and without the last three tracks on disc one.
Prince of Darkness is a box set of four CDs by Ozzy Osbourne released in 2005.
 The first two CDs are Osbourne's solo work containing various studio recordings, live tracks, b-sides, demos and outtakes, and the last two CDs are collaborations on disc three and cover songs on disc four.
 The cover versions were recorded for this box set compilation, but were released on a stand-alone album entitled "Under Cover" later in the year.
Genesis 1970–1975 is a box set of five studio albums by Genesis featuring Peter Gabriel.
 It was released on 10 November 2008 in Europe by EMI and on 11 November 2008 in North America by Atlantic/Rhino.
 The 7-CD/6-DVD box set includes newly remixed versions of the albums "Trespass", "Nursery Cryme", "Foxtrot", "Selling England by the Pound" and "The Lamb Lies Down on Broadway".
 The band's 1969 debut album, "From Genesis to Revelation", was excluded because of the band losing the rights to it.
 The fifth pair of discs includes B-side songs, 3 rare songs from BBC Sessions in 1970 and the never-before-released "Genesis Plays Jackson" soundtrack.
 Each bonus DVD features audio versions of the albums in 5.1 surround sound, as well as videos from each album's corresponding tour, new interviews, and photo galleries.
 The European version includes CD/SACD Hybrids instead of standard CDs.
 EMI also released a limited edition six disc vinyl box set containing the original albums only on 24 November 2008.
Start Together is compilation box set containing the entire remastered discography of the American rock band Sleater-Kinney.
 A digital version of the remastered box set was released on September 2, 2014.
 3,000 limited edition physical copies of the box set were released on colored vinyl with a 44-page companion book on October 21, 2014.
 The box set also included a 7" single of the song "Bury Our Friends" from their 2015 album "No Cities to Love".
En concert à l'Olympia is the first live album recorded by the French singer Hélène Ségara, and her third overall.
 It was released in October 2001, and was available first as a box set containing two CDs, then as a DVD.
 It achieved success in the countries where it was released.
Classic Disney: 60 Years of Musical Magic is a 5-volume compilation series, each containing 25 (125 in total) songs compiled from Disneyland and Walt Disney World, various Disney films in animation and live-action, and the Walt Disney anthology television series.
 Each volume was released individually on CD and cassette between 1995 and 1998.
 Volume One was released on March 28, 1995, Volume Two on September 12, 1995, Volume Three on July 2, 1996, Volume Four on July 15, 1997 and Volume Five on September 22, 1998.
 In 2000, a box set was released containing volumes 1 - 3, followed by a box set containing volumes 1 - 4 in 2001.
 Finally, a box set containing all five volumes packaged in a slipcase was released by Walt Disney Records in Australia, Japan, North America and Europe in 2003.
X Japan (Japanese: エックス・ジャパン , Hepburn: Ekkusu Japan ) is a Japanese heavy metal band from Chiba, formed in 1982 by drummer Yoshiki and lead vocalist Toshi.
 Predominantly a power/speed metal band with heavy symphonic elements, they later gravitated towards a progressive sound with an emphasis on ballads.
 Besides being one of the first Japanese acts to achieve mainstream success while on an independent label, the group is widely credited as one of the pioneers of visual kei, a movement among Japanese musicians comparable to Western glam.
The Apple Years 1968–75 is a compilation box set by English musician George Harrison, released on 22 September 2014.
 The eight-disc set compiles all of Harrison's studio albums that were originally issued on the Beatles' Apple record label.
 The six albums are "Wonderwall Music" (1968), "Electronic Sound" (1969), "All Things Must Pass" (1970; spread over two CDs), "Living in the Material World" (1973), "Dark Horse" (1974) and "Extra Texture" (1975).
<ref name="Grow/RSonline">Kory Grow, "George Harrison's First Six Studio Albums to Get Lavish Reissues", rollingstone.com, 2 September 2014 (retrieved 4 September 2014).
</ref> The final disc is a DVD containing a feature titled "The Apple Years", promotional films from some of his previous posthumous reissues, such as "The Concert for Bangladesh", and other video clips.
 The box set marks the first time that the "Dark Horse" and "Extra Texture" albums have been remastered since their 1992 CD release.

Question: What band is widely credited as one of the pioneers of visual kei, and released a compilation box set containing two CDs, a VHS tape and a T-shirt from the "Violence and Jealousy Tour"?
Answer: X Japan