also: かせい
noun
singing voice; sound of singing
Refers to the voice as it is heard while singing, or the audible sound of someone singing. Can be used for both solo and group singing.
彼女の歌声はとても美しい。
Her singing voice is very beautiful.
遠くから子どもたちの歌声が聞こえてきた。
I could hear the sound of children singing from afar.