To take your tangent further, this describes me! I originally was a musician and studied for a degree in Music Composition. At the same time I had also been programming for the web since I was like 11 or 12 and suddenly one day I realized that my career choice should have been my hobby and my hobby should be my career. Now I've been progra,Ming full time, in the web dev biz for almost a year, and got a small startup I'm hacking away on on the side. I also switched colleges and am a Comp Sci major.
I have a feeling the creative muscle you've exercised as a musician has also helped tremendously as a hacker & business owner. Those same musician/programmers that I know also tend to come up with some pretty far-out ideas & solutions. The discipline of constant practice, the ability to tap into your "intuitive" & creative side, and the understanding of another language (musical notes) probably translates very well.
This can apply to other creative fields too, of course.
