I have always found the nature of musical tones interesting; this interest just increased! – We have a lot to learn from studying the maths and nature of waves in general, and applying the science to music might just be one of the greatest ways to do this. Go go string-theory!!
An anonymous slashdot reader notes a Time.com profile of Princeton University music theorist Dmitri Tymoczko, who has applied some string-theory math to the study of music and found that all possible chordal music can be represented in a higher-dimensional space. His research was published last year in Science — it was the first paper on music theory they ever ran. The paper and background material, including movies, can be viewed at Tymoczko’s site.