Although Wilson often had entire arrangements worked out in his head, they were usually written in a shorthand form for the other players by one of his session musicians. He also took advice and suggestions from his musicians and even incorporated apparent mistakes if they provided a useful or interesting alternative. Session drummer Hal Blaine stated, "Everyone helped arrange, as far as I'm concerned." On notation and arranging, Wilson explained: "Sometimes I'd just write out a chord sheet and that would be for piano, organ, or harpsichord or anything. ... I wrote out all the horn charts separate from the keyboards. I wrote one basic keyboard chart, violins, horns, and basses, and percussion."