Marillion emerged from the short-lived progressive rock revival of the early '80s to become one of the most enduring cult acts of the era. The group formed in Aylesbury, England, in 1979, and adopted its original name, Silmarillion, from the title of a J.R.R. Tolkien novel. Initially, Marillion were comprised of guitarist Steve Rothery, bassist Doug Irvine, keyboardist Brian Jelliman, and drummer Mick Pointer, but after recording "The Web," an instrumental demo, they recruited vocalist Fish (born Derek Dick) and bassist Diz Minnitt. Prior to recording their debut single, "Market Square Heroes," keyboardist Mark Kelly and bassist Pete Trewavas replaced Jelliman and Minnitt.