Black Mask with Elastic Ear Loops. Singer's Mask. General Merchandise. Hal Leonard #MASKFLUTE. Published by Hal Leonard . The Instrumentalist's Mask is designed to be worn by wind players, an overlapping spandex access panel allows the instrument to easily insert while creating a good seal around the rest of the mask and closes when instrument is removed. Because everyone's face is shaped a bit differently the wire across the top of the mask allows a custom fit to follow the curve of your nose and cheeks to find the perfect fit.