There are multiple bands with this name.

1. Ukraine -> Avant-garde with elements of black/death metal

Last known lineup:

Leonid Savin - Vocals, Guitar, Fluite, Bayan
Anatoliy Makogon - Vocals, Bass, Percussion
Maxim Kirichenko - Drums, Percussion, Programming, Sound Effects
Nataliya Makogon - Keyboards

Formed in 1992 under the name Temptation and later changed their name to Brainstorm, before becoming Graal in 1997. The band released the album “Sigullum Naturae” in 1998, and "Gedankent.raum/Graal" in 2000. They have since split up.
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