BEST BRASS Warm-up For Trombone / Flugelhorn Retail Price: ¥12,750 Trombone Practice Mute Fits snugly in the bell, allowing for easy portability! Highly effective at silencing sound, enabling practice anywhere. Provides a good balance from low to high registers, allowing for smooth playing. Purchased by mistake and stored in a clean place. Unused. The outer box has a slight dent (see photo 3), but there are no other noticeable scratches or stains.