Euphonium Mouthpiece I played the euphonium in school and used this. There are scratches. It has been cleaned, but there is some blackening. I think it will become clean if polished. It should come apart when you twist it, but it's stuck and won't come off, so I'm selling it cheap. From Google: The engraving "BUZZ SPECIAL" indicates that this mouthpiece was manufactured by Buzz, a Japanese manufacturer. This mouthpiece is often used for large-bore instruments such as trombones and euphoniums. Thank you for looking.