vocalist
A person who sings, especially as a professional or as a lead performer in a band.
[C] Countable
pl: vocalists
This term focuses on the technical and professional aspect of singing. It is the preferred word in industry contexts, such as recording studios or concert lineups, where the singer is viewed as a specialized musician playing the instrument of the voice.
While a singer might be anyone from a shower enthusiast to a choir member, a vocalist is typically framed as a lead performer or a session professional. It carries a connotation of skill, training, and a specific role within a musical arrangement.
Used to count individual people who perform as singers, such as three vocalists in a harmony group.