I think that the medicine program at USYD is ridiculous. As many people have reiterated when it was opened, they opened it again because they were losing too many students. That is fine, except that demanding a 80 WAM throughout the first three years of your degree, not to mention needing an overtly crazy UAI of 99.95 to get in in the first place, is too restrictive.
People would want to be assured they can graduate as doctors from the start, like with any other uni, instaed of having to trduge through another degree first and running the risk of not getting a high enough WAM to get into graduate medicine, and graduating just as science graduates with no clear career prospects in mind (since they were taking the science degree in the first place to get into medicine). This is the reason why the dux of my school went to UMELB instaed of USYD when she failed to get into UNSW--because she could not be assured of getting into medicine if she should fail to get the required WAM.
However, as for the Music/Medicine combination--I personally like it. I was really regretful that I could not combine Pharmacy with Music, or an Arts degree in which I could specialise in Music. However, I do acknowledge that while many scientists/doctors are musicians too, they would not want to waste their time getting a 80 WAM in a degree that does not prepare them adequately for medicine, and why just taking a 6cp subject in music each semester would actually be a better idea. That is why it may not be very successful, if at all.