Christofer Johnsson of Therion cites Celtic Frost's 1987 album Into the Pandemonium in particular for playing a key role in the development of the "gothic and symphonic wave of bands" in the 1990s, noting further that neither his group Therion nor Paradise Lost "would have sounded the way we did without Celtic Frost".
Christofer Johnsson fra symfonisk metal-bandet Therion anser Celtic Frosts album Into the Pandemonium fra 1987 for i særdeleshed at have spillet en vigtig rolle i den opstående "bølge" af gotiske og symfoniske bands", han har ydermere udtalt at i 1990'erne ville hverken hans gruppe, Therion, eller Paradise Lost have lydt som de gjorde uden Celtic Frost".