noun
Specifically refers to the Japanese pentatonic scale formed by removing the fourth and seventh degrees from the diatonic scale. Used in music theory and traditional Japanese music contexts.
四七抜き音階は、日本の伝統音楽でよく使われる。
The pentatonic scale is often used in traditional Japanese music.
Literally 'removing four and seven', from the method of constructing the scale by omitting the fourth and seventh degrees of the diatonic scale.