supportingvocalist

noun
UK /səˈpɔːtɪŋ ˈvəʊkəlɪst/
US /səˈpɔːrtɪŋ ˈvoʊkəlɪst/

A person who sings along with the main singer to help the song sound fuller.

The supporting vocalist sang the harmony while the lead singer sang the melody.


OTHER MEANINGS

2. A singer who performs in the background during a live concert.

The supporting vocalist stood behind the band and swayed to the music.

3. A singer who adds extra voices on a recorded track.

She worked as a supporting vocalist on three albums this year.

4. A singer who helps another performer by singing lower or higher notes.

The supporting vocalist covered the high notes the main singer could not reach.