Coroner

Coroner is a Swiss technical thrash metal band from Zurich, Switzerland formed in 1983. They garnered relatively little attention outside of Europe. Coroner's music combines elements of thrash, progressive rock, jazz, and industrial metal with suitably gruff vocals. With their increasingly complex style of progressive rock-infused thrash, they are often labeled as "the Rush of thrash metal" by music critics. Coroner's sound then progressed and the production became more refined, resulting in the more progressive No More Color, Mental Vortex and Grin albums.

The Swiss thrash trio Coroner were originally road crew for Celtic Frost. They eventually formed their own group, recording their demo Death Cult in 1986 with Tom G. Warrior of Celtic Frost on vocals. Their first full-length album R.I.P., released in 1987, featured bass player Ron Broder on vocals and he assumed the role for the rest of the group's existence.