Roots of The Sweet Inspirations

Delia Juanita Warrick, known professionally as Dee Dee Warwick, was an American soul singer. Born in East Orange, New Jersey, she was the sister of singer Dionne Warwick, the niece of Cissy Houston, and a first cousin of singers Whitney Houston and Leontyne Price.

Doris Troy was an American R&B singer and songwriter, known to her fans as "Mama Soul". Her biggest hit was "Just One Look", a top 10 hit in 1963.

Betty Jean Everett was an American soul singer and pianist, best known for her biggest hit single, the million-selling "Shoop Shoop Song ", and her duet "Let It Be Me" with Jerry Butler.

The Ikettes were a female backing vocal group for R&B duo Ike & Tina Turner, performing primarily as a trio, though occasionally expanding to a quartet. The group originated in 1960 when Ike Turner recruited members of Art Lassiter's backing trio, the Artettes—Robbie Montgomery, Frances Hodges, and Sandra Harding—to record "A Fool in Love" with Tina Turner after Lassiter failed to appear for a scheduled session. Following the success of the single, Turner formed the Ike & Tina Turner Revue and assembled a new backing group, soon known as the Ikettes.

The Righteous Brothers are an American musical duo originally formed by Bill Medley and Bobby Hatfield but now comprising Medley and Bucky Heard. Medley formed the group with Hatfield in 1963. They had first performed together in 1962 in the Los Angeles area as part of a five-member group called the Paramours, and adopted the name the Righteous Brothers when they became a duo. Their most active recording period was in the 1960s and '70s, and, after several years inactive as a duo, Hatfield and Medley reunited in 1981 and continued to perform until Hatfield's death in 2003. The term "blue-eyed soul" is thought to have been coined by Philadelphia radio DJ Georgie Woods in 1964 when describing the duo's music.

Kenneth Gamble and Leon A. Huff are an American songwriting and production duo credited for developing the Philadelphia soul music genre of the 1970s. In addition to forming their own label, Philadelphia International Records, Gamble and Huff have written and produced 175 gold and platinum records, earning them an induction into the Rock and Roll Hall of Fame in the non-performer category in March 2008.