This is what four my boys like to do in their spare time... I have another younger son who likes to accompany them on the piano. We have two on violin, one on viola and one on cello.
Practicing takes a lot of time and effort, on both the child and the parent! But the results are so rewarding! I love that my kids are to the point where they find different music and start playing together. I love to sit back and listen.
It's one of those moments in life that I absolutely love!