How many note piece are there and may i know their locations?
They are very hidden, me telling you might not even help.
North Shiptown, you need to find a secret route there and an item to wipe the wine.
Beach Cave where you can find the big red crystal, before going up towards the crystal room walk right and you can walk behind the wall there.
Fire dungeon 2nd floor before the 2nd boss, one of the rooms on the sides will lead to a note piece.
There are 3 notes.