A cool twist on the theme! Someone has already mentioned it, but reminds me of Crypt of the Necrodancer a bit :D
My only issue with the game is that the layout is not very comfortable. You have to constantly switch your attention between two separate screens, which gets overwhelming very quickly. If you decide to continue working on the game after the jam, I'd recommend switching to a vertical layout for the notes.
A good game overall, I liked the premise!