Visual Argument Concept

This is for a class assignment where we had to create a visual argument. Can you tell guess what's going or what the subject is? Feel free to leave your thoughts on this. :3  My son was a champ and posed for it. ^^

Art © Christi-chan

Other credits:
Sheet Music Pack lockstock.deviantart.com/art/S…
Dancer Brushes  fav.me/d189mf7
Empty Room 1  fav.me/d33g75i
Wall Texture fav.me/d17v9on
Music Notes spiritsighs-stock.deviantart.c…