"Babe" comes courtesy of Taylor Swift, who co-wrote the tune with Train's Pat Monahan and also adds background vocals in the song's chorus and bridge.
"[Taylor] reached out. We [have] obviously known each other for many years. When she was first getting started we had just had our first little EP out, called Premium Quality Tunes
," Jennifer Nettles
. "She still has a copy of it that we signed for her whenever we played a couple of shows together. She was excited we were getting back together and reached out and said, 'Hey, I have a song.' That is a short list, ladies and gentleman, of people to whom she has said, 'Hey, I have a song, you want to sing it?' So we said, 'Yeah!'"Kristian Bush
added, "We've never really put a song by anyone else on our records so we weren't really used [to] sorting through that and we didn't want to mess it up, so we didn't tell anybody until we got it finished and she liked it. Thank God. Because it is a good song."