Really fun idea! I am wondering more about how to incorporate this into play. Who can perform? What tools or instruments might they need? How long does it take to play a song, and how often can it be done?

I absolutely love the concept, and I would love to see it in action!

Super creative and different entry.  I love how the songs make things happen.  So cool! You definitely incorporated all of your games! 

This is a very interesting & fun concept. I think a little example of play may help show people exactly how you envision this working in the middle of an adventure.