If this is just for recording and not playing out live then he could tune is guitar down 1/2 step to Eb. Then if he fingered A you would hear Ab and D=Db, E=Eb etc.

If you are playing out live then maybe a second guitar tuned to Eb with the first tuned to E would work.

My preferred method of teaching would have him learn barre chords and chords is all positions, with and without a capo. That way he would never be stumped.

Last edited by MarioD; 06/30/14 12:39 PM.
Whenever I get something stuck in the back of my throat, I dislodge it by drinking a beer.
It's called the Heineken Maneuver.

64 bit Win 10 Pro, the latest BiaB/RB, Roland Octa-Capture audio interface, a ton of software/hardware