How to Play
The instrument was played by taking the frame lightly in one hand and placing it between the lips near the front of the player’s teeth, which were slightly parted. The instrument’s vibrator was then plucked with the player’s second hand. The tone and character of the ensuing sound were altered through changes in both air flow, generated by the player’s inhalation or exhalation, and size of the mouth cavity, usually controlled by the raising or lowering of the player’s tongue.