This is a very beautiful and complete game! The aesthetic blends with the gameplay seamlessly. Looping components together feels very satisfying for lots of reasons: the loops can have arbitrary shape meaning that janky shapes feel like clutch wins, the sound effects and animations for both starting and ending a loop provide excellent feedback, etc.
Literally the only thing I think could have been improved is the time out; feels kind of soft since there's no sound effect for when time runs out, and no sound or feedback for when time is almost out but not quite yet.
Loop is my favorite submission so far!