＜p class="editor-paragraph" dir="ltr"＞＜span＞These whistles are tuneable, it has a polished brass body which can produce a bright and responsive tone.＜/span＞＜br＞＜span＞A delrin/copolymer plug in the mouthpiece is also helpful to reduce clogging, once warmed up.＜/span＞＜br＞＜br＞＜/p＞＜div class="video-embed youtube-embed"＞＜iframe src="https://www.youtube-nocookie.com/embed/joGfYsEYamA?rel=0" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; fullscreen" allowfullscreen="true" title="YouTube video" referrerpolicy="strict-origin-when-cross-origin"＞＜/iframe＞＜/div＞＜p class="editor-paragraph"＞＜br＞＜/p＞