Music is not one "thing". There is the copyright in the music itself and then the copyright in the sound recording. They are quite different. If you have a decent budget and pay the going rate for the music then you can expect to acquire both. If you are on a more limited budget then as has been...
Speaking as a composer Im wondering why he would do that? Actually the answer might be that sometimes the music needs something much more subtle than a theme or motif to give it cohesiveness and the lilt and lightness of a 3/4 time signature might do that. So it's about scoring the sense of the...