https://www.musicworks.co.nz/categories/brass-woodwind/mutes-silent-brass/silent-system
MusicWorks | Yamaha Silent Brass | Practice Mute for Brass
Shop Yamaha Silent Brass systems for quiet practice with natural tone. Ideal for trumpet, trombone, horn, flugelhorn and tuba players at any level.
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https://www.jlandressbrass.com/shop/Accessories/p/Yamaha-SB7J-Silent-Brass-System-for-Trumpet-Cornet.htm
Yamaha SB7J Silent Brass System for Trumpet & Cornet - 889025152952
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