Formed in 1986 by vocalist/guitarist Jacob Hansen, guitarist Jakob Schultz, bassist Jesper M. Jensen, and drummer Per Möller Jensen, Denmark's Invocator released a series of thrash metal albums infused with slight progressive touches during the first half of the '90s. 1991's Excursion Demise debut and its 1993 follow-up, Weave the Apocalypse, were both released by Sweden's Black Mark label, after which the group jumped to Nuclear Blast for 1994's Early Years (a collection of old demos) and 1995's third album proper