supporting vocals

noun
UK /səˈpɔːtɪŋ ˈvəʊkəlz/
US /səˈpɔːrtɪŋ ˈvoʊkəlz/

Singing that helps the main singer sound better.

The band's supporting vocals made the chorus sound full and strong.


OTHER MEANINGS

2. Voices that sing behind the main singer in a song.

She sang supporting vocals on his new album.

3. Extra recorded voice tracks mixed under the main vocal.

The producer added supporting vocals to fill out the mix.

4. A group of singers who help a solo performer on stage.

The supporting vocals stood at the back of the stage.