This is really good for how it operates, and the usage of the sequence and noticing that particular quirk of the word is amazing! Didn't use hints and finished!
(Spoiler-esque Ahead)
It's a whimsy concept of singing out the remaining sequence of whatever is made, but with that specific feature makes it from a tile painting game with its fixed structure, to something where the goals are more varied in possibility. That pretty much tied the entire game from good to really good and hats off with the creativity in this one!
I don't think there is much after, I mean the funny singing is nice, the music is a bit repetitive after a while but its fine, the sfx was good, the undo and restart qol is top notch, and of course the level design was nice. I still can't believe it didn't click for me specifically on how the mechanic operates (I thought it was you can go back to old letters if it's not directly behind it, but nope), until I saw the SINGULARITY below the game to map out the path, and OH, OHHHHHHHHHHHHHHHHHHHHHHHHHHHHH.
Was satisfying.
Anyway, enjoyed this a lot, and thank you for submitting to the game jam!