It’s the only song that comes on and I get physically anxious… it’s so open and revealing.

I wrote this in one night. The first week we were here, we had an assistant in the room and I worked a little bit but didn’t get very far. So I said, ‘We have to kick everybody out and it just has to be me and Chad.’ He’s the only guy who I can really write in front of.

We would dim the lights in the studio… I sat at the piano for hours teaching myself how the song might go. I sang it that night, and that was it: what you hear on the song is the original take. I couldn’t sing the vocals again if i tried. It would be like the second snowball fight in Groundhog’s Day. This is the first time in my life as a singer that I’m in a state of emotion, not just intellectualizing how to sing a song. Every time I hear it, it’s like getting to meet myself in the same room and take a walk around myself, like, ‘I guess that’s what I look like from that angle.’

Mayer in an interview with Rolling Stone.