Other brands (wind instruments and brass instruments) BERP Burp/Buzzing Practice Aid for Trombone/Euphonium (Small/Medium-Sized) #4 Schilke *The second image of the

*The second image of the back is gray

The thin wire gives it a light feel

This model has a sharp

This DR (Dry) finish model not only produces a powerful attack sound

Other brands (wind instruments and brass instruments) BERP Burp/Buzzing Practice Aid for Trombone/Euphonium (Small/Medium-Sized) #4 Schilke *The second image of theBerp Brass Buzzing Practice Tool By using a Berp and attaching the mouthpiece next to the mouthpiece, you can hold the instrument and buzz just as you would when playing a real instrument. In addition, by moving the dial up and down to open and close multiple holes, you can adjust the breath resistance (pressure) when buzzing. In addition, by holding the instrument, you can perform fingering and sliding techniques at the same time, making it an