I would also ask if your son has any particular musical interests. I started on piano in early grade school and hated it. The main reason being is that the only "songs" I learned were awful fake songs in the instruction books. My kids' teachers got them into simplified hymns as early as they could. If I had had that, I know I would have stuck with it. As it was, I rather would have been outside with my friends than inside playing inane songs on the piano.