I just put on the OCR of GOSPEL AT COLONUS, which was inspired by all these CAMP threads. (If you've never heard the original version of that song, I recommend it. I love the kids from CAMP, but the original recording is incredibly moving.)
No, "How Can I See You Through My Tears" (the opening number in CAMP) is from GAC. I believe that "Century Plant" was written for the film (probably by one of the Gores).