This song was written by Semisonic frontman Dan Wilson
, who explained: "When I wrote that song I was thinking about sex and relationships and what makes for a good partner in life. It's not always whether you're compatible, it's much more whether you have some chemistry - whether there's a spark. When we finished the album, I realized the same is true about being in a band. It doesn't matter if your musicianship is perfect, it doesn't matter if everybody has the same taste, all that matters is if there's chemistry between the band members, so I chose that as the title of the album also."