Putrefaction was a side project of Grave sometimes around 1989. But the songs were shortly after integrated in the Grave set and so the project was ended. (Copied from Metal Archives) Putrefaction is also a heavy crust band from Ireland and a death metal band from Brazil.
Master is the most well-known project of bassist, vocalist, and songwriter Paul Speckmann. They were well known in the early extreme metal underground, being both one of the first death metal bands, and one of the most influential alongside Death in the emerging death metal scene. The band began in 1983, and still exists today, having released several albums with many different lineups. Paul Speckmann started out as bass player in doom band War Cry, where he met up with drummer Bill Schmidt who was drafted in to replace previous War Cry drummer, Joe Laccino.
Necrophagia is an american death metal band assembled in Wellsville, Ohio in 1983. They were one of the first death metal bands and were a popular group in the underground "tape trading" scene of the early-to-mid-1980s. Featuring hard-driving metal and growling vocals, Necrophagia became a pioneer in the fledgling extreme metal genre. Their first full-length album, Season of the Dead, was recorded and released in 1987.
Formed in 1985, Bay Area band Insanity were instrumental in metal's evolution from thrash to death metal. Drummer Bud Mills was a big reason why, as his so-called "1-1" beat presaged the modern blastbeat. The band's sound more than lived up to its name. Not only did it crank thrash up to frenzied warp speeds, it also displayed chops well ahead of its time. Insanity were legendary worldwide in the '80s metal tape trading circuit, with members of Carcass and Napalm Death citing them as an influence.