OK. He's into just rap music, can't really play church songs/music, and has a big head already and he's just a beginner?
Exactly HOW did he become the church musician again?
Let me clarify, he can play. He's learned all the licks from J. Griggs tapes and plays well. What I'm basically saying is what Sabian Night was saying. As far as knowing notes, modulation, keys for that matter. For instance, We play a certain song in C. If you ask him what key is he in and you want to follow him, he'll tell you I don't know, I just play all over the board.
When singers come in and some says put me in Ab, he looks at them as if they have cursed him out. He has a good ear, but that won't help all the time. You know how singers are if you are trying to find the key as they sing, most just stop and say, I'm doing it accap.(He get very angry) Therfore, I try to encourage him to at least learn his keys. Everything is not in C.