"'Pain' was one of the last songs to get completed," lead singer Jim Adkins
recalled to Phoenix New Times
on the album's 10th anniversary. "Actually, I believe it was the last one - as in, we could do nothing else until I finished lyrics. I took the afternoon off and just walked around [University of Arizona] campus and just finally did it - didn't stress out, wrote whatever felt like worked with the mood of the song. At the time, I thought it was maybe the throwaway song for the album. Sometimes because it happens easy and fast, it can mess with your head. You trick yourself into thinking because it wasn't this super-labored process, it isn't as worthy as other ones that were. Guess I was wrong because, it ended up being a single."