The German band Grave Digger was originally formed in November 1980 and were one of the first bands to sign with the upcoming label Noise Records in the early 1980's. Through Noise they released three raw power metal albums and soon found themselves being compared to a band called Helloween. In 1987 the band split up but some of the members continued the band under the name Digger. In 1991 Chris Boltendhal reformed the band and they have since then released several albums.

source : tartareandesire.com