you had to have got the event, but it was a while ago so the only way you can get it now is by cheating or swapping mystery gift info with someone who has it
Yes, you can get the azure flute in Pokemon platinum.
where to find a azure flute without action replay and cheating in pokemon platinum
You cannot get the Yellow Flute in Pokemon Platinum. The only Flutes that are obtainable in Pokemon Platinum are the White and Black Flutes.
the flute is the azure flute
Event
the flute
No, it is only available in the older Pokemon.
The white flute I think attracts Pokemon. Later in the game you can also receive a black flute. The black flute on the other hand repels Pokemon.
Simple sell the flute.
someone gives it to you.
there is no azure flute but you can get arceus November 7-15.
you get the white flute by findering the suite key at the valor lakefront