Thanks for trying and commenting my game!
And this is good advice for the text. I didn't know about the outline component, I will have a look. Thanks for this too!
You made a good point about the sandbox mode. I want to let the user plays freely the drums, but from what I tried, a plain sandbox mode is somehow not so fun since it feels a little bit aimless. I have in mind several features I have to make first, but they are too much big for the scope of this jam.
Since I will continue this project beyond the 3D Jam, this feature (together with a VR mode) are definetely my next big milestone goals. Stay tuned on my twitter if you are interested, I will probably start to talk about my progress on those subjects soon!