Tom,
Keep him away from Jazz. Raise him to believe that Country Music is the "cats meow". It will go easier for him to find gigs. Get him some cowboy boots and a big cowboy hat.
Make his life easier if you're gonna get him involved in music. OK? Maybe you could get him to take lessons from DonM.
If "you" try to teach him Country, he'll be a laughing stock trying to put all of those IIm7 chords before the V7 chord. And he doesn't need to know any diminished chords. Besides I think there's only 2 or 3 country tunes that use a dim chord and they are very old tunes anyway. He doesn't need to know either one of those 2 or 3 tunes.
I'll be impressed if you can teach him to do the Guitar lick on "Beer For My Horses" exactly like the record. I love that lick. It sounds real simple but try to play it along with the CD. It's a monster. My new ambition in life is to learn this lick.
A granda baby boy would be great. My first wife took all of mine away. Enjoy friend!!
_________________________
I'm not prejudiced, I hate everybody!! Ha ha! My Sister-In-Law had this tee shirt. She was a riot!!!