That’s great! Do you mind me asking?... How did you motivate your kids to take it up and stick with it? Or were they self-motivated? I’m guessing it helps a lot if there are other musicians in the family.
I did not lean on him to take up piano, he wanted to do it. If such was not the case, I don't think it would be worth the effort. You have guessed correctly that it does help a lot if there are other musicians in the family.
His idea when he was little. And then we forced him. Just kidding. There was a time when he was less enthusiastic about it but he has always been a child that puts his efforts into what he is doing or supposed to be doing.
It helped that Grandma watched him for an hour or so every day after school and that the piano was at her house at the time. (It belongs to my wife, but it remained at her parents' house until we had our house and the living room was done.)