Yabla video uses of 低音

zài
西方 xīfāng
de
歌剧 gējù
里面 lǐmiàn
他们 tāmen
jiǎng
de
shì
gāo
gāo
yīn
zhōng
yīn
低音 dīyīn
In Western opera, what they're saying is a treble, tenor, bass,