The visuals are awesome. The input seems to in rhythm with the song, but in metronome form rather than when the notes occur. It'd be a meticulous process to assign input to the notes, but it'd also make it feel like you're actually playing the notes. Like codyloyd said too, the player needs some kinda of 'you did/didnt do it' to be displayed more clearly than the notes disappearing, an out of sync audio file would work well for mess ups too.
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Graphics were kinda meh to me especially in the text but thanks for that anyways. Also It was a meticulous process but that is not the reason I chose the metronome method, I chose it because I realised I had about a day to hand craft 4 tracks each about 5 mins long which would far exceed the time given for the jam and though I still have the start of each sequence I will never complete them. As for feedback the thought did cross my mind but I have never joined such a short jam before and wasn't able to make it.