be in good, poor, etc. voice
be in good voice
To sound pleasant or appealing, as of a singer or other vocal performer. What a beautiful performance! Linda is really in good voice tonight.
be in poor voice
To sound grating or unpleasant, as of a singer or other vocal performer. Oh, we left the show early because their lead singer was really in poor voice.
be in good, poor, etc. ˈvoicebe singing well, badly, etc: The soprano was in excellent voice.
See also: voice