How do you get a flute on Pokemon xy?

In Pokémon X and Y, you can obtain the Flute by visiting the Pokémon Center in the city of Parfum Palace. After defeating the Pokémon League and completing the main storyline, you can find the flute in the room where you met the Flabébé. Once you interact with the flute, it will be added to your items, allowing you to use it to summon certain legendary Pokémon.