K&G Mouthpiece Buzzers are available for Trombones, Baritones and Euphoniums. They come in both large and small shanks. This is the latest development from K&G mouthpieces. Most players use the buzzing technique before warming up as their daily routine. It allows you to practice buzzing through your mouthpiece with normal resistance whilst holding your instrument in a standard playing position. he benefits of this technique have been confirmed by many brass players.