There are at least two artists sharing the name:
1. Grav is a black metal duo of Swartadauthuz and Sir.N. hailing from Norrland in Sweden. Grav is anti-life, anti-bands, anti-live and anti-playing.
So far they have released three demos and Dit Inget Ljus Kan Nå EP on Ancient Records.
2. Grav is an underground hip-hop artist from Chicago.
His first album, Down to Earth, was released in 1995. It featured production from a young Kanye West and is the first known production that the now-famous West has created.