I went to this museum, and it's in this long hall of high-ceilinged old salons. And it starts with, I don't know whether they're Neolithic, but very old musical instruments, and it progresses through. Of course, most of their musical instruments are from the last couple of centuries in Western Europe. I didn't actually make it all the way through; I was like one or two salons from the end and I was standing there and here was a piano that had belonged to Leopold Mozart. And the piano that Brahms used for practicing. And the piano that Haydn had in his house.

And I had this little epiphany that the reason that I was having trouble finding another software project to get excited about was not that I was having trouble finding a project. It was that I wasn't excited about software anymore. As crazy as it may seem now, a lot of my motivation for going into software in the first place was that I thought you could actually make the world a better place by doing it. I don't believe that anymore. Not really. Not in the same way.

This little lightning flash happened and all of a sudden I had the feeling that the way—well, not the way to change the world for the better, but the way to contribute something to the world that might last more than a few years was to do music. That was the moment when I decided that I was going to take a deep breath and walk away from what I'd been doing for 50 years.