Whistle-Stick

The grung of One Grung Above are trained to use this new musical instrument. This is a hollow tube with holes cut throughout, much like a flute. You can play music with it for entertainment, but the grung also swing it about by a sturdy cord (attached) to create a sound recognizable by other grung, so they know each other's approximate location. Additionally, grung that know Thieves' Cant can use a whistle stick in this manner to communicate over distance.

If you have proficiency with a given musical instrument, you can add your proficiency bonus to any ability checks you make to play music with the instrument. A bard can use a musical instrument as a spellcasting focus, substituting it for any material component that does not list a cost. Each type of musical instrument requires a separate proficiency. Proficiency with a musical instrument indicates you are familiar with the techniques used to play it. You also have knowledge of some songs commonly performed with that instrument.

History: Your expertise aids you in recalling lore related to your instrument.

Performance: Your ability to put on a good show is improved when you incorporate an instrument into your act.

Compose a Tune: As part of a long rest, you can compose a new tune and lyrics for your instrument. You might use this ability to impress a noble or spread scandalous rumors with a catchy tune.

Musical Instrument: