I had spent about three months where I couldn't sing at all, so that was anxiety-provoking. But after that, I went back out. I sang for two hours in my garage one day to see if I had a voice.

What if what you do to survive kills the things you love?

I think politics come out of psychology.

The book was just something that came along after we played the Super Bowl and I wrote a little essay that went online. Then I had two or three weeks and I said, wow, that essay was pretty good. Maybe I'll try and write some other stuff. Writing about the depression, I just felt - you know, when you write a book like this, you have to open up your life. You have to be willing to do so to a certain degree.

If you're up there [on stage] thinking about what you're doing, you're just not there and it's not going to happen.So trying to learn how to overcome those - which is a normal thing to do. You're in front of a lot of people. People are going to get very self-conscious. So you have to learn to sort of overcome that tendency towards self-consciousness and just blow it wide open. And you jump in and join all those people that are out there enjoying what you're doing together.

Sky of blackness and sorrow, sky of love, sky of tears. Sky of glory and sadness, sky of mercy, sky of fear.

I realized the only time I felt complete and peaceful was while I was playing or shortly afterwards, even though it was in front of thousands of other people, which most people wouldn't consider to be a safe place.