I tend to stay up late, not because I'm partying but because it's the only time of the day when I'm alone and don't have to be performing.
I'm becoming far more interested in just functionality and making sure my body is as strong as it can be so I can swing my kids around and not worry about aches and pains.
I had two passions growing up - one was music, one was technology. I tried to play in a band for a while, but I was never talented enough to make it. And I started companies. One day came along and I decided to combine the two - and there was Spotify.