Producer Andy Wallace says he got the gig working on Nirvana’s landmark album Nevermind because of his work with Slayer – which had found a fan in Kurt Cobain. “I don't know the whole background on it, but I had heard that Butch Vig had mixed the album, and I've heard the mixes; they're good. I had heard that he said, ‘I want that guy that did the Slayer album.’ I never discussed it with Kurt, but I’ll bet that’s true. “There were a couple of things that I knew I wanted in general,” Wallace explains of his approach to the mix. “I knew I wanted to have the big parts be really big and really aggressive, just in your face.