My little music app

I always wanted to create a way of making it very easy for someone with very little music knowledge to play blues with their phones. Either a solo or with a background music or other phones.

This is the first concept of what I had in mind:

https://www.youtube.com/watch?v=eS7mYW1OVQA

Now that I've built this it is pretty much obvious what the next steps should be. I'll soon build the v2.0 with quite a few interesting features. Go blues!