Rhythm and Structure of Two Songs

The first song I listened to was on the NAXOS Online Resource. I listened to the first part of Sometimes I Feel Alive entitled "There is a Moon Sole" from the CD Julian Wachner: Choral Works Vol. 1. The structure that I could best fit to this song was of the form ABCAC. As far as the rhythm goes I think the song's meter is in 4/4 but then speeds up to 4/8.
The second song I listened to from my collection entitled Good Morning by rapper Chamillionaire. The background accompanyment is from Tom Petty's song "Free Falling," so the song is essentially a mashup. The structure of the song is of the very simple form ABA'BA''B, as most hip-hop songs are formatted (I listen to a lot of hip-hop) in which A is the different verses and B is the chorus. The rhythm was approximately 4/8.