I am the rhythm champion of the world!
The core concept is insane in the best way and I am absolutely here for it. The extended arms were appropriately difficult to get fully under control, leading to me producing a truly chaotic synth lead performance which I am suitably proud of, and making it surprisingly difficult to get a perfect score on any given note.
Encountered the same bug mentioned by LuLuStyle08 below, although I didn't mind so much as it let me set this sick highscore :)
I should add the disclaimer that I'm understandably biased towards games featuring really long arms lol