Question: Which German supergroup created by the vocalist of the band Edguy released "Angel of Babylon" in 2010?

Context articles: The Savage Poetry
Angel of Babylon
Vain Glory Opera
Felix Bohnke
Fucking with Fire: Live
Superheroes (EP)
Hellfire Club (album)
The Singles (Edguy album)
Tobias Exxel
Avantasia

The Savage Poetry, released in 2000, is a re-recording of the album "Savage Poetry", originally launched in 1995 as a demo by German power metal band Edguy.
 This version is also seen and referred to as their fourth official studio album.
 The album was originally self-produced and released initially as a demo before the band were signed by AFM.
 The re-recorded tracks are also slightly re-arranged.
 Some version of the album also features the original recording as a bonus disc.
Angel of Babylon is the fifth full-length album by Tobias Sammet's rock opera project Avantasia, released on April 3, 2010, along with "The Wicked Symphony".
 "Angel Of Babylon" was released both as part of a box set, with the two albums combined and as an individual album.
 It is the third and final part of "The Wicked Trilogy".
Vain Glory Opera is the third (or second "official") studio album by the German power metal band Edguy, released in 1998.
 It was mixed by Stratovarius' Timo Tolkki, who also played additional lead guitar on "Out Of Control", and featured additional lead and backing vocals by Hansi Kürsch of Blind Guardian on "Out of Control" and the title track "Vain Glory Opera."
 Further choir vocals were supplied by Ralf Zdiarstek and Norman Meiritz.
 At the time of recording the album, Edguy had not yet chosen a permanent drummer to succeed Dominik Storch.
 So session musician Frank Lindenthal, a good friend of the band, was asked to play drums on the album.
Felix Bohnke (born 2 September 1974) is a German musician and the drummer of heavy metal band Edguy.
 He joined the band just before they recorded the album "Theater of Salvation" in 1998.
 Before joining Edguy he was a member of German band Saints & Preachers.
 In 2001, he was a guest drummer and later in 2003, a member of the band Taraxacum along with Edguy bassist Tobias Exxel.
Fucking with F*** - Live is a live concert DVD and CD by German power metal band Edguy.
 It is the band's second live album since "Burning Down the Opera" in 2003 and their first ever concert DVD, which was recorded during their "Rocket Ride" Tour in 2006 in São Paulo, Brazil.
 The album was also released as a double CD album and a 2CD and DVD set.
Superheroes is an EP by the German power metal band Edguy, released in 2005.
 On this EP, the band has moved away from the sound they had developed on their previous album "Hellfire Club".
 The songs on "Superheroes" are much less akin to the band's native style of power metal, but tends towards the direction of hard rock.
Hellfire Club, released April 6, 2004, is the sixth album by German power metal band Edguy.
 The music of the band is supported by a German orchestra, the Deutsches Filmorchester Babelsberg.
The Singles is a compilation album by German power metal band Edguy.
 It features all singles (with the exception of the song "Reach Out") from the EP's "King Of Fools", "Lavatory Love Machine" and "Superheroes" on a single disc.
 The compilation was released on 17 November 2008, the same day as Edguy's eighth studio album, "Tinnitus Sanctus".
Tobias "Eggi" Exxel (born 27 February 1973) is the current bass player for the power metal band Edguy.
 Tobias was hired by Edguy in 1998 when vocalist Tobias Sammet, who had played bass since the band's formation in 1992, decided the band should have someone who could focus on playing the instrument full-time.
Avantasia is a German supergroup rock opera project created by Tobias Sammet, vocalist of the band Edguy.
 It has been characterized as a rock opera, as it features the contributions of various vocalists and musicians and it consists of concept albums.
 The name is a portmanteau of the words "avalon" and "fantasia" ("fantasy") and describes "a world beyond human imagination" (a quotation from the booklet).