Teach your son the great art form of Mississippi Delta Blues, and subsequently, Chicago-based
blues. Muddy Waters, for instance, as a Mississippi Icon, guys like Buddy Guy for the
Chicago-based influence. Then move onto Jazz. Skip Rock and Roll, it'll mess with his
head, and hop he never discovers rap. Oldies are fine if used sparingly.
Any artist released under Chess Records is a good route to go

Alot of things can be said about Blues artists, one of them is that they
are definately NOT mainstream. :hb:
Oh, and for Classical music, turn on NPR, I know out local one plays
Classical music maybe 15 hours a day, news for 2, then Jazz for whatever
hours are left.