There are at leaset 4 artists who use the name Grail.

1) Just ignore the Rod Stewart production credit and you will find a crazy Prog/Psych album.
Connected to the great 60's freakbeatsters 'the Game'.
Released in 1971 but recorded in 1970 and released in germany only, you can tell the
quality of the acid was still good then. This contains classical and eastern moves mixed with Psych and Prog elements.

2) German black metal band Grail, hailing from Mecklenburg-Vorpommern, released their first demo "The Morning of Disillusionment" in 2011. Shares members with Shores of Ladon, Balnasar, Thorybos.

3) Stoner/sludge/doom metal from Phoenix, Arizona, United States Bandcamp

4) Grail is a Dungeon Synth project by Diego Pizarro and Laura Ruiz. Get into the atmosphere and involve yourself in the magic path of the Grail. https://dungeongrail.bandcamp.com/ Read more on Last.fm. User-contributed text is available under the Creative Commons By-SA License; additional terms may apply.