after getting the silph scope from the rocket game corner go to lavendar town and go into Pokemon tower go through here beat some rockets and save mr fuji he will give you the poke Flute.
Mr Fugi
you get poke flute from guy in top of poke tower
You can find the Poke Flute in the Pokemon Tower. After you free Mr. Fuji, he will give you the Poke Flute.
the poke flute in lavender town in the Pokemon tower keep going up you will see srees but it will say go a way
To move the snorlax, you need a poke flute. You get the poke flute from the old man in Pokemon Tower his house is in the same town as the Pokemon Tower
you have to use a poke flute
mr. fuji gives you the poke flute when you rescue him from team rocket at the Pokemon tower
You have to get the poke flute, which you have to get from Mr. Fiji who is in Laverndar town.
Work your way to the top of the Pokemon Ghost Tower and defeat the Rocket Grunts.
Get it from Fugi who at the top of the tower in Lavender town
The Poke Flute wakes up sleeping Pokemon, and was a key item in Pokemon Red, Blue, Yellow, FireRed, and LeafGreen. It could be used in or out of battle. The Blue Flute, however, as far as I can tell, only wakes up one Pokemon. I hope this helped.
you get it by gettting threw the Pokemon tower in lavender town but first you need to get the silph scope
futi gives it to you