I agree with Carlos that depending on the type of music and nature of musical genre and the approach of the musician in his/her creation process one may benefits from math and physics; concrete music is an example of that.
Just as an example in the context of the phenomena associated with the perception of the sound /music, the musical consonance can be interpreted in the area of acoustics/mathematics.
The perfect musical intervals (octave, 2: 1, fifth, 3: 2, and fourth, 4: 3) correspond to frequency relations of small integers. These consonant intervals are among the first harmonics (frequency components) of a sound.