It's well made and nicely presented but quite tough... if the balls fell straight down (slowly) it would be easier to think of what to press, but I guess that's just guitar hero then. Was difficult to try to make my brain press the right key though.
I know, when I was playtesting I felt the same until it eventually just clicked! I guess it's just something you have to get good at! I'm glad you think it looks nice and is well made, thank you for trying it out!