JKMR

Known working instruments:

   Holy Cithara - Requires One Piercing Note.
   Enchanted lyre - Only after The Fremennik Trials. Note that this will teleport you away from Everlight.
   Fremennik sea boots free lyre teleport with lyre in inventory

Instruments that do not work:

   Air Guitar
   Bull Roarer
   Magic Flute
   Snake charm

NOTE: You have to stand NEAR the stage, otherwise it does not work.