‪@GregoryRivkin‬

[@GregoryRivkin]

‪@Gregory Rivkin‬ demonstrates a flugelhorn mouthpiece by ‪@JosefKlierGmbHCoKG‬. Model: USA Line Size: 5C Back-bore: A2 (more open than on stock or standard modern flugelhorn mouthpieces of some common corporative brands) Having an option of more opened(alterated/adjusted) back-bores on some mouthpieces can be useful and helpful to trumpeters, who face a situation of playing with dentures or implants or crowns in front or rare teeth.