I believe you receive the PokeFlute as a gift/reward from an old man as a thank you for saving him from Team Rocket at the top of Lavender Town's Pokemon Tower. :) Hope this helps.
rescue Mr. Fuji and he will give you the pokeflute - by hezekiah
get the pokeflute.
Use the pokeflute.
Use the pokeflute.
Use the pokeflute.
Use the pokeflute.
rescuing Mr. Fuji from the Pokemon Tower.
Use the pokeflute that Mr Fuji gave you.
You need to use the pokeflute on snorlax to wake it up.
You get the pokeflute and use it when you are in front of it. You get the pokeflute by going through the poke tower and put marowak's spirit to rest. Then go up the stairs, defeat team rocket members and you will encounter Mr. Fuji. He will take you to his house and give you the pokeflute.
he is the fushia gym leader, u need to get passed the snorlax to get to fushia city which requires the pokeflute
pokeflute