I think one of the things about writing in the studio is that the song hasn't matured, if you like, so quite often the vocals are early attempts. Whereas once you've taken it out on the road a bit, you learn more about a song.
“I was at a U2 concert and someone asked me if my hair color was real... I thought to myself, if I had $1 for every time someone asked me this, I would be very rich.”
“Experience enables you to recognize a mistake when you make it again.”