A backing vocalist is a singer who supports the lead vocalist in a musical performance. They provide harmonies, additional vocal layers, and enhance the overall sound of a song. Backing vocalists can perform in various genres, including pop, rock, and R&B, and often work in recording studios or live concerts. These singers may also be referred to as background singers or harmony singers. Their role is crucial in creating a fuller sound and adding depth to the music. Famous artists like Beyoncé and The Supremes have utilized backing vocalists to elevate their performances and recordings.