His mother wants him to learn the lesson without the consequences. We have to make mistakes. As Mark Twain said, good judgement comes from experience and experience comes from bad judgement. Your question may be featured on future shows and on our Web site. The academic environment isn't everyone's strong suit.
Many people have great careers without having done well in high school.
Keep your eye on his long-term well being. Make sure he has other things that give his life meaning and give him a sense of self-esteem. Luckily, he's already motivated about music. If he loves music and understands the experience of giving 100 percent, he has got what it takes to have a successful career. Maybe it's producing or marketing music.