How much does it differ from CP tonality? How "functional" (whatever that means!) it is? I don't think the V-I cadence is actually all that important for "establishing tonality" in popular music. I mean, I guess it's fairly common to end a piece/section with those chords but I think that's more likely just a consequence of them both being major chords in the key (and major chords are popular). According to this, it is equally common to precede the I chord with the IV chord (actually a bit more common in fact!).
Also in the minor keys, while the major V chord and the leading tone is certainly common, my intuition says that it is also common to use only natural minor through the song. That would be quite un-CP. Am I wrong?
Also in the minor keys, while the major V chord and the leading tone is certainly common, my intuition says that it is also common to use only natural minor through the song. That would be quite un-CP. Am I wrong?