Flute

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— In-game description

“

Double-click to change your skill bar and play a flute for your friends.

— In-game description

The Flute is a bundle item that allows the player to play musical notes.

Acquisition

Vendor	Area	Zone	Cost
Gem Store			800
Black Lion Statuette (vendor currently unavailable)			30

It is a musical device with 2 octaves and 8 notes per octave. It is "tuned" in E major.
Use Stop Playing to end the current note.

The flute cannot be played underwater — you are given five empty slots and Return, although your utility and profession mechanic skills remain.
After a transform effect expires, e.g. when Mist Form ends, your skill bar will be replaced with 5 empty weapon slots; you can requip or swap weapons to fix this.

Originally, there was no way to end a repeating note, until the July 24, 2013 update, after which you could press the same key to stop the sound. This was replaced in a subsequent patch with the break functionality.

Gem Store history This table is not guaranteed to be up-to-date.As the history has to be updated manually, it may be incomplete. Caveat lector.
Start date	End date	Discount	Notes
July 16, 2013	Available	-	New
March 06, 2014	March 07, 2014	20%	March Sale (2014)
March 10, 2017	March 11, 2017	40%	March Sale (2017)
March 21, 2018	March 22, 2018	40%	March Sale (2018)
August 28, 2018	August 30, 2018	50%	Anniversary Sale (2018)
March 06, 2019	March 07, 2019	50%	March Sale (2019)
March 23, 2020	March 24, 2020	50%	March Sale (2020)
December 17, 2024	December 31, 2024	20%	Wintersday (2024)
March 11, 2025	March 18, 2025	25%	March Sales (2025)
March 03, 2026	March 10, 2026	25%	March Sales (2026)

Black Lion Statuette historyAs the history has to be updated manually, it might be incomplete. Since the February 28, 2023 game update, most items are also permanently available. Caveat lector.
Start Date	End Date
July 28, 2020	August 11, 2020
July 13, 2021	August 17, 2021
April 19, 2022	May 24, 2022
November 08, 2022	Available