Aahh, no need to appologize for the music, (yah, it's kinda "kid krap" music but..) main thing is your son is/was doing a good job and doing it right. Learning responsibility and rewards. So,, gawd awful music can have a "pass" ,,he's doing everything else well.

13 year's old and doing a great job, handling and showing he can handle responsibility is what it's all about. Fine young man there, you've got alot to be proud of and don't be shy about telling him too.