Big Whiskey and the GrooGrux King producer Rob Cavallo explained this song to Relix magazine: "Dave plays an electric guitar with a delay pedal on it. He has this cool Matchless amplifier and he started to play this riff just from out of nowhere; that original guitar performance is the one we still use and the basis for the song. We called it 'Seven' because it's in 7/4 time."
The band debuted this at a show in Albuquerque, New Mexico, in 2009.
In a 2009 interview with Acoustic Guitar magazine, Matthews spoke about his inclination towards unusual rhythms: Sometimes I write specifically because I know Carter [Beauford, DMB's drummer] will be able to bring the strange rhythm out. In a song like 'Seven,' I was writing that one, all the while knowing that Carter would be able to play that, make it clear. But still what I'm playing makes it like a march already. And then Carter plays it - I like the way he plays because he can make something that's an odd time sound perfectly reasonable."
During the initial touring in support of the album, Matthews let Tim Reynolds take over guitar duties on "Seven" while Matthews focused on singing. "I guess if I wasn't lazy, I could learn to play that lick and sing easily at the same time," he said. "There's a looseness about the way that some licks are delivered that I can manage on some songs, but on that one I haven't yet - I have the luxury of someone to cover it for me. I played it on the record but having Tim there to cover it - except when he's soloing, then I jump in - makes a big difference. I don't feel obligated to be a killer guitar player, I guess."