When writing Chapter 20, where Nick performs in a school concert with Camille, and both Grace and Peter show up, not expecting to see each other, I based the song he supposedly wrote on the track, "Hope Has Come". Generation Unleashed is a youth ministry based in Portland, Oregon for teens age 12 - 18. Here's a link.
I really love this song - the lyrics, the melody, the meaning. I played it over and over again as I wrote the chapter, trying to get the soulfulness just right.
If you would like to read Chapter 20, click here.