I really like the build, I am unsure if this is 1 test of many, but it is very good at the moment, maybe if you went down a tiny bit more on visuals of the instruments it would be even faster for very fast paced songs, but overall I really like the idea, it functions well, and I appreciate the fact that you published it for free because of the current pandemic, so although it isn't perfect yet, you're doing very well.