Solomon King taken on tour by Billie Holiday, as well as working with Elvis Presley's backing group the Jordanaires, whom he used as his own backing group when recording his first version of "She Wears My Ring" in Nashville, Tennessee. King's chart success in the UK began with "She Wears My Ring", which was a top three hit there in 1968, and was also a hit in 40 other countries, but failed to reach the U.S. "Billboard" Hot 100 chart. "She Wears My Ring", based on La Golondrina ("The Swallow)" by the Mexican composer Narciso Serradel Sevilla, was written by the Nashville
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