From the LATimes, Cameron Crowe on music and moviemaking: calendarlive.com: Moviemaking, from the soundtrack up [pdf]
The right song at the right time is a powerful concoction that can make a sequence, or even an entire movie. It scratches at your soul. […]
[…] Music, and particularly songs, can be a finicky partner to motion pictures. After all, both are often attempting to tell a complete story, their way, without the help of the other. But just between you and me, right up through my own sixth film as a director, “Elizabethtown,” it’s been the prospect of those long afternoons and evenings in the editing room, coaxing that marriage between the right song and the right scene, that’s kept me going through the grueling parts of making a movie.