compound note (harmonica)
Music term for a harmonica note produced by drawing or blowing through multiple holes simultaneously, as opposed to a single note (単音).
See also: 単音 (たんおん)
To produce a compound note on a harmonica, you need to blow or draw through multiple holes at the same time.
複音奏法はブルースハーモニカの基本的なテクニックの一つだ。
Compound-note playing is one of the basic techniques of blues harmonica.