Learning to play mouth organ

My son loves music. He likes the toys which have some music in them. He even turns the music on and starts dancing. I think when he grows up he will do something related to music.
I thought that it is better to start some kind of musical education from this age, so i decided to teach him the easiest instrument mouth organ ( If you thought i will say piano, you should watch the below video which proves that mouth organ is much easier to play than piano)