Sea whistle - Kaiteki

...The reed inserted into the mouthpiece has a bell-shaped metal fitting called a copper mouth to prevent slipping. There are many different sizes, but the na in North China can be divided into four types according to the range: (1) high-pitched na, range 1 point A to 3 points B, (2) second-highest-pitched na, range 1 point A to 3 points E, (3) mid-pitched na, range A to 2 points B, and (4) sea flute (the smallest na), range 1 point B to 4 points C. It is an indispensable instrument in folk weddings, funeral processions, and percussion ensembles, as well as in accompaniment to local operas and folk songs and dances. In Peking opera, it belongs to the ceremonial hall and plays various na tunes. ...

*Some of the terminology that refers to "Sea Whistle" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

…吹口にさしたリードに銅口と呼ばれるすべり止めのベル形金具がついている。大小さまざまのものがあるが，華北地区の嗩吶は，音域によって(1)高音嗩吶　音域1点イ～3点ロ，(2)次高音嗩吶　音域1点イ～3点ホ，(3)中音嗩吶　音域イ～2点ロ，(4)海笛(形の一番小さな嗩吶)　音域1点ロ～4点ハ，の4種に分けることができる。民間の結婚式，葬式の行列や吹打楽の合奏，地方戯曲や民間歌舞の伴奏に不可欠の楽器で，京劇中では式場に属し，各種の嗩吶曲牌を演奏する。…

※「海笛」について言及している用語解説の一部を掲載しています。

出典｜株式会社平凡社世界大百科事典 第２版について | 情報