vocal

中文： 声乐部分、人声、元音

1. A vocal sound; specifically, a purely vocal element of speech, unmodified except by resonance; a vowel or a diphthong; a tonic element; a tonic.
2. A part of a piece of music that is sung.
3. A musical performance involving singing.
4. A man in the Roman Catholic Church who has a right to vote in certain elections.

复数 vocals