This was an extremely exciting project for me to get to work with Paul Thomas Anderson and Jonny Greenwood. I didn’t know until I worked with Jonny that he had written his own classical works before. His classical pieces have been performed by the BBC orchestra in Britain and broadcast on BBC Radio — and naturally because of this relationship, we used the BBC Concert Orchestra to perform the film’s score. We recorded at Abbey Road Studios. Paul had temp [scored] the film with a lot of modern classical works and Jonny’s music ended up working so well that only two of these classical pieces remained in the film and the rest was all Jonny’s score. Jonny Greenwood is so amazingly talented, and his music is so much a character of the film. He did a great job.