Seminal band that stayed in the underground for too long. Had tons and tons of demos in the mid 80's, but I think the first album actually came out in 1990. A lot of bands did name themselves after Master's songs too.
Master's S/T and "On The Seventh Day God Created...Master" are classics. Paul Masvidal from Cynic did lead guitars on the 2nd album
Should really say that Master is essentially a one man band, Paul Speckmann, with revolving/session musicians. He had a bunch of other side projects which were basically re-recorded or same style of music under Death Strike, Abomination, Paul Speckmann Project.