Joss Stone who contacted S-Curve Records founder and CEO, Steve Greenberg in December 2001 telling him that "they had just heard the greatest singer they'd ever heard from their country." In early 2002, Greenberg flew Stone to New York for an audition, in which she sang to backing tracks of classic soul songs: Otis Redding's 1968 "(Sittin' On) The Dock of the Bay", Gladys Knight & the Pips' 1973 "Midnight Train to Georgia", and Franklin's "(You Make Me Feel Like) A Natural Woman"; Greenberg instantly signed her to his label. After being signed by S-Curve Records, her US market album was released
Backing vocalist and even developing highly complex harmonies and arrangements. When they perform live, they may have backing vocalists who impersonate their voices. Some bands use backing vocals in order to contrast with the lead singer who may be performing an unusual vocal technique. For example, Brian "Head" Welch, the lead guitarist of the band Korn, performed backing vocals on several songs, and notably on the song "Ball Tongue", he screams the chorus while lead vocalist Jonathan Davis sings incomprehensible scat vocals. Similarly, the Canadian deathcore group Despised Icon uses two vocalists, one performing screams and another performing low, growling death grunts