In the case of "You're the Best Thing About Me," we were really excited about the mix we had six weeks ago. Then we started talking about how we were going to play it live and I went back to some early demos and found this one that had done at a point when we were experimenting with different arrangement ideas. It was an experiment we hadn't pursued and I thought, "This would be a good approach if we play it live," which we did on the Jimmy Fallon show. It's a fleshed-out approach with some new guitars.
Then Bono came into the studio to listen to it and was like, "OK, something is happening here. It's a better song now. I can't explain why, but I'm feeling something off this." So we kind of went off in a panic with us working furiously with two days to go before we had to turn the single in and get it to everybody for their consideration. We ended up agreeing that the simplicity, the rawness of it offers a counterbalance to the lyric and melody, which is very classic. It's a love song and it kind of takes it in a more convincing way. Somehow the song seems better - and it was totally last minute.