For disclosure, I played the freshly updated version since that's the only build available. Not that it matters too much, plus Xavier let us update games after the deadline so it's all good.
Screenshot proof that I finished the game:
Okay maybe I didn't :P I found it very hard from the get go? I am a musician with good auditive memory, but even with two keys it's hard to remember the proper sequence if it gets really long. It's nice because there's plenty of room for challenge, but maybe make the first levels simpler? If they are short they won't be annoying, a skilled person will go through them in a breeze and stupid people like me can use this time to adapt and get ready for more.
Feedback wise, I like that you went to the point. It's very efficient and can be played quickly. The gameplay itself is self-explaining so you need not have some kind of voice explain it, but it's missing one explicit feedback: what to do when the level starts: I heard "you play the game with F and J..." (brilliant idea btw) "... press the space bar to start level". And so I did, and I waited there for something to happen. I even checked the itch.io page to see if this was a bug or something. It did not occur to me to start pressing either button randomly. That needs to be explicitly mentioned for those like me who don't randomly mash keys :)
Props for doing both the music and blind theme and making the game accessible. Few of us actually stuck to those rules and your game is probably the most user-friendly for blind people. Speaking of which, you should post a link to it on reddit.com/r/blind !
I like the commitment to go and add professional audio acting as well! This makes it so much more enjoyable and shows you were serious about this! Kudos!
I'll stop here for now, I have so many games to review still! I hope to see this bloom and I'll see you at the next jam! Take care!
P.S. ex Love2D user here, nice to see a game made with it!