"Rick Rubin embraced Johnny Cash when he was floundering without a label. Rick thought this was unthinkable. He started soliciting writers beyond the country community and they did two great, odd, dark records. I wound up writing a song called 'I Witnessed A Crime' without knowing that Rick was going in this more contemporary vein. I later discovered it was too mid-’50s; too perfect for old-school Johnny Cash. So it didn't reach release until it was bootlegged out of the studio and found its way to YouTube. 

Rick called me up – I live just walking distance from house-to-house: ""Can you come over?"" I said, ""Well, you still got that old Fender guitar down there? If you let me play it I'll come on down."" He had this stunning Fender Esquire from 1954. I walked down and the door opened up, he ushered me into the living room and sitting on the sofa was Johnny Cash and June Carter Cash. I was dumbfounded. So we sat down this close and he said, ""I like that song."" June started welling up and said, ""Ooh, you played the solo just like Luther Perkins."" I said, “Well, I'd like you to help me get through it.” We wound up singing it across the table. Little did I know that Rick had hidden microphones, capturing the whole thing."

"I was 11 when this film came out and it was the first time I ever went to see a film twice in one week. It blew me away and changed my life. Not just the film, but largely [György] Ligeti's atonal choral pieces. This discordant, sometimes beautiful, intertwining of voices, that were dark and then beautiful and then disturbing and then uplifting. I went out and bought the album, and then put it on my record player in my room and shut myself in my wardrobe with a flashing light and spent hours in there. I wanted to shut myself off from the world and immerse myself completely in this extraordinary sound. And I went on to be an artist that built environments and quadrophonic sound spaces – purely based on this experience. And years later, when we came to write the score for Danny Boyle’s Sunshine, I said, "do you think 2001 can be referenced?" and Danny said, "absolutely", and that was just like heaven for me. This album is at the core of where my head’s at. One minute it will be playing some Brahms and then it’s playing this beautiful, yet discordant, choral music and I think like that now. This is the rhythm of my bones. Something for the future is to score for a choir."