Question

How do you change meleotta's form?

Answer 1

Have it use the move Relic Song, and it should be noted that this can only be done in-battle, and Meloetta will revert back to it's regular form after the battle is over.

Answer 2

Meloetta's form is changed when Meloetta uses the move Relic Song in battle. However, Meloetta changes back to aria form after the battle is over.

Source: experience

Answer 3

You go to the café in the alleyway in Castelia City. Then interact with the guy with the guitar by the counter. He plays a song. Then Meloetta comes out of its pokeball and sings. After that Meloetta wants to learn Relic Song which allows Meloetta to temporarily turn into Pirouette form during battle.

P.S. I may be off since I did this a few months ago.Hope this helped.

Answer 4

Relic song is needed. You can get it in the cafe place in the alley of castelia city. Just talk to the musician.