As good as Donnie Darko is, I felt the music was a little out of place, even for the setting.
Depends on which version you’re watching. I own the 3-disc blu-ray set, which contains both the theatrical and director’s cut of the film. I prefer the theatrical cut all the way, and the music is one reason. The director’s cut decided to change the music up, and I have no idea why. The music was just fine in the theatrical release.