I think nervousness - a heightened sense of nerves and attention is a very healthy thing for a performer. It is an artificial environment that you are going into whether it's concert or recital, or stage. When I know something so well, I've done it so often, and you kind of walk out for Tuesday night's performance, or you feel like that, that makes me more nervous then being geared up. A little bit like race horses. In the same way that the horses are always difficult to get into that lineup, the worst time of my life is the 10 or 15 minutes before I go on stage.

I grew up in an extremely musical atmosphere. There was a lot of music and singing around. I never really thought about one not singing, as a person. I've always sung and made music, it was just self-understood.

When I hear music I want to engage in it. Even if I engage in it very quickly and turn it off in my mind. If I'm in an elevator, clearly I don't want to be dealing with that, even if it's Mozart. In fact, especially if it's Mozart. I don't think Mozart belongs in an elevator.

I have every iPod that's been made ˘ that's how sick I am. I carry anything and everything I possibly would want to listen to. I have a lot of jazz. I adore Ralph Towner, Leo Kottke. I've always been a big Oscar Peterson fan. I've branched out a little bit more in rock-and-roll, but that's maybe because I'm 50 years old and I can now listen to Steely Dan again without shame. I adore the Grateful Dead. Creedence Clearwater Revival. Crosby, Stills, Nash, and Young. All that's been fun to get back into. But I'm no longer interested in the Doobie Brothers.

Every opera, because every opera is a unique slice of a particular perspective, historical perspective and psychological perspective if not musical style, and so forth, they all present different challenges. Some can be musically very challenging, some can be psychologically more challenging. There is always something that requires a pretty specific amount of energy and attention.

I think one of the great things behind game theory, or game development, especially in education now, apropos, digital and new media, is finding a better, easier, more intuitive way to learn that takes that away from the drudge and the structured work part and puts it into the reflective, "I'm alive, I'm a human being, I'm not working right now," part. And I think that I would like to see music and arts and humanities become more able to even the color spectrum of the fan of activities.

I love to sleep because I need the rest, but I hate to miss something. I would love to be able to take a pill that I wouldn't have to sleep. So, sometimes what keeps me up at night is just that I don't want to say good-bye to that day. And at the same time, I love to start the next day. I think I'm essentially a very unsettled person.