As far as i know the azure flute is an event only item that has already passed. The azure flute japanese.
The only way to get it was to receive it via mystery gift but as i ve said the event window closed a long time.
How to get azure flute in pokemon fire red. When the flute is played a staircase appears at the base of the tile allowing the player to climb up and challenge arceus. If arceus is defeated during any moment of the azure flute event the player character may come back to spear pillar to rechallenge it using the same method. The yellow flute in pokemon firered and leafgreen is used to snap a pokemon out of confusion in the middle of battle.
You will need the silph co to be able to do this you get that after you beat giovanni in team rocket s secret base place in the celadon game corner. This is only for pokemon platinum if you want the action replay code for the azure flute members pass secret key manaphy egg message me and i ll give it to you 100 freeeeeee.
Yes you can get the azure flute in pokemon platinum.