"Rebuild" is a song written by Jon Foreman of Switchfoot and Matt Thiessen of Relient K. The song was written in conjunction with the bands' 2007 Appetite for Construction Tour, featuring members from all three bands on tour, Switchfoot, Relient K, and Ruth.

All proceeds from the song download will be donated to Habitat For Humanity.

It was slated to surface on iTunes, but Relient K frontman Matt Thiessen said the two bands would release the single online for free, but with an option for donation for Habitat.

"So I think we're gonna release it for free online and create a place where people can donate to Habitat," Thiessen said.

[2] It was officially made available to the public November 1, 2007, as an optional download.