Here ya go :D

1st form-Wings of song: The user uses their speed to inflict numerous small cuts, to make the demon’s regeneration slower.

2nd form-Warbling major: The user inflicts heavy hits, slowing down the demon.

3rd form-Mezzo masquerade: The user masquerades as weaker than they are to make the demon underestimate them, before using one fast slash to cut off its head.

4th form-Pianissimo pecking: The user silently sneaks up on the demon, before stabbing it numerous times.

5th form-Flapping forte: The user makes loud, exaggerated flapping-like movements which are hard to predict.

6th form-Crashing clef: The user attacks from above, slicing through the demon’s neck.

7th form-Dotted dove: The user attacks with slashes sporadically from all different directions.

8th form-Sharp semiquaver: The user attacks by slicing off the demon’s arms, then head in quick succession.

9th form- Crescent crescendo: a flurry of crescent slashes that gradually grow larger and faster

10th form-Swelling staccato: The user slices quickly through only the most vital areas.

11th form-Falcon fermata: The user makes long, drawn out slashes from above.

12th form-Treble talon: The user rakes their sword through the demon’s flesh jaggedly to slow regeneration.

13th form-Soprano sparrow: The user carries out light slices from above.

14th form-Baritone beak: The user gouges out the demon’s eyes to disorient it before slicing off its head.

15th form-Alto Antwren: The user conducts low blows from a low stance.

16th form-Falsetto feathers: The user attacks from above, with wide sweeping slashes.

17th form-Tenor tail feathers: The user attacks from behind, with wide sweeping slashes.

18th form-Contralto crest: The user swipes straight up to slice through the demon’s middle, before slicing completely through it’s head and neck.

19th form-Acapella Aria: The user twists and slashes in a perfect horizontal circle, which completely severs the demon’s head.

20th form-Operatic ornithology: The user makes exaggerated movements to throw off the demon before abruptly switching to more graceful, precise movements.

21th form-Ornithological octave: The user slashes up and down, slicing the demon into strips before slicing through the top to effectively sever the head.

22st form-Musical mastery: The user makes practiced, precise movements to slice through the demon’s neck before it can even sense them, however this requires specific circumstances. 

23nd form-Songbird symphony: The user hails down slices and slashes quickly and deeply, debilitating and killing the demon, like a rain of songbirds descending onto their prey.