Brainstorm is a German power metal band, formed in 1989 by guitarists Torsten Ihlenfeld and Milan Loncaric, and drummer Dieter Bernert, The band features lead singer Andy B. Franck, who is also famous for his other band, Symphorce.
 They are known to play a somewhat darker style of music than most power metal groups.
The Dark Side is the third studio album by power metal band DarkSun, which is the English version of "El Lado Oscuro", the album was released in September 2007.
 "The Dark Side" and was released in September 2007 through FC Metal Recordings.
 The critics were as good as the Spanish version, like "the album can be defined with one word: brilliant!"
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 The band collaborated on Rage's album "Speak of the Dead", with a Spanish version of the song "Full Moon" entitled "La Luna Reine," which appeared as a bonus track.
 Just after the release of "The Dark Side" drummer Rafael Yugueros left DarkSun to form part of power metal band WarCry replacing former drummer Alberto Ardines.
 Yugueros had already worked with WarCry on their 1997's demo "Demon 97".
 The band re-recruited Daniel Cabal who worked on what would become the band's new album "Libera Me".
 On the summer of 2008 DarkSun announced that Cabalwas leaving the band, all these occurred in a professional and friendly way from both parties.
 On the same announcement the band presented new drummer Jose Ojeda, who had performed drums on Spanish bands like Rivendel Lords, Killian, among others.
Power metal is a subgenre of heavy metal combining characteristics of traditional metal with speed metal, often within symphonic context.
 Generally, power metal is characterized by a faster, lighter and more uplifting sound, in contrast with the heaviness and dissonance prevalent for example in extreme metal.
 Power metal bands usually have anthem-like songs with fantasy-based subject matter and strong choruses, thus creating a theatrical, dramatic and emotionally "powerful" sound.
 The term was first used in the middle of the 1980s and refers to two different but related styles: the first pioneered and largely practiced in North America with a harder sound similar to speed metal, and a later more widespread and popular style based in Europe (especially Scandinavia, Germany, Greece and Italy), South America (especially Brazil and Argentina) and Japan, with a lighter, more melodic sound and frequent use of keyboards.
Unrestricted is a studio album by German power metal band, Symphorce, released on October 15, 2010, through AFM Records.
Sinctuary is the second full-length album by Heavy/Power metal band Symphorce.
Truth to Promises is the debut album by Heavy/Power metal band Symphorce.
Twice Second is an album by German heavy metal band Symphorce, released in 2005.
Symphorce was a German progressive power metal band, originally assembled in 1998.
Seven Thorns is a Danish power metal band formed in 1998.
 The group have undergone multiple changes in line-up leading up to the release of their debut album, "Return to the Past" in 2010.
 Despite being somewhat latecomers to the power metal scene, Seven Thorns' sound draws heavily on the "old school of power metal" citing influences by bands such as Gamma Ray, Helloween and Stratovarius.
Helloween is a German power metal band founded in 1984 in Hamburg, Northern Germany by members of bands Iron Fist and Gentry.
 Its first line-up consisted of singer and guitarist Kai Hansen, bass guitarist Markus Grosskopf, guitarist Michael Weikath, and drummer Ingo Schwichtenberg.
 After the release of a self-titled EP and their debut album "Walls of Jericho" in 1985, it expanded into a quintet with the addition of singer Michael Kiske, Hansen choosing to focus on guitar instead.
 Under this line-up, they released the "Keeper of the Seven Keys" albums (1987 and 1988), which established Helloween as a notable heavy metal band and led to the creation of the power metal subgenre.
 However, Hansen left the band quickly after the release of "Part II" and was replaced by Roland Grapow.
 He then created the band Gamma Ray.

Question: What is special about the truth to promises album byHeavy/Power metal band Symphorce.
Answer: Power metal band