What does the azure flute do?

Question:The Azure Flute (Japanese: てんかいのふえ Heaven and Sea Flute) is an event item received through a Nintendo Event needed to find Arceus in Pokémon Diamond and Pearl. When the top of Mt. Coronet is reached, some stairs will appear that will lead the player to the Hall of Origin. It is said to play a tune that is beyond this world.

Best Answer - Chosen by Asker: The Azure Flute (Japanese: てんかいのふえ Heaven and Sea Flute) is an event item received through a Nintendo Event needed to find Arceus in Pokémon Diamond and Pearl. When the top of Mt. Coronet is reached, some stairs will appear that will lead the player to the Hall of Origin. It is said to play a tune that is beyond this world.

What does it "do"?

I presume it just sits there until someone picks it up and plays it.