Very nice tutorial with a voice that explains how the game works.
However, i recommend you to change the font of the letters. "V" and "U", as well as "D" and "O" are difficult to tell apart, especially in the later course of the game.
Pressing the right keys almost felt like i was playing on a piano. Unfortunately the music didn't catch that feeling i had.
Overall i really enyojed your game. Always nice to see that music games have also made it into the jam. Great work.