to tickle or not to tickle the ivory

As I was reading " Rachel's " blog about the piano, it came at a time in my life when I have been trying to make a very, very difficult decision. (Kaye do not continue to read this you might cry). I have been fighting TJ with piano for many years now. They only way I can get him to practice is if he wants to go somewhere or do something. I will say "only if you practice piano", and then he does it. His piano teacher looks for cool songs for him to play just to keep him interested, but does not seem to be working. TJ has managed to talk his teacher out of doing finger power (I think that is finger exercises) and the only way I know about that is Samantha tattled. Usually when he practices I will listen to make sure I hear music but not really pay attention to the song. A few days ago when he was practicing it occurred to me that he was playing Wyatt's songs. Songs he was playing when Kaye was teaching him in Simi Valley at the age of 8. I told him to play the right songs and he turned into a 5 year old laying on the bench and saying I am not going to practice and you can't make me. Then he went into the tantrum of, I don't know why I have to do piano if I don't like it. It was an amazing site to see a 15 year old boy laying across the piano bench whining. He really is not making any progress and I don't know if I should keep paying every month if it is such a battle. He is so different than Samantha who lives on the piano and enjoys every second of it. (Kaye you would be proud). I am thinking of letting him quit. I don't think it would be just quit and that is it. I think he would have to do something else instead, like guitar lessons. The reason it is so tough for me to let him quit is because I always hear people say they wish their parents never let them quit. So I always said I would never let my kids quit so they could never say that. This is a very tough decision. I hope that I will have it figured out in the next month.