スリー・ディグリーズ (Three Degrees)

The Three Degrees
The Three Degrees were a female Philly soul and disco vocal musical group formed in 1963 in Philadelphia, Pennsylvania. Although always fronted by a three person line-up, a total of eleven women have rotationally represented the group so far. The original members were Fayette Pickney, Shirley Porter, and Linda Turner. They were discovered by Richard Barrett. Turner and Porter were replaced by Helen Scott and Janet Harmon in late 1963; Sheila Ferguson replaced Scott in 1966. Valerie Holiday (a Miss Tan Boston winner) replaced Harmon in 1967. "Draw The Line" was a Top 40 hit for the group in the mid-60s; they also hit the top 40 in 1970 with an update of the Chantels' "Maybe".

Best known for their hits on Philadelphia International, The Three Degrees had several hits in the mid-1970s, the biggest of which was the #1 UK and #2 US single "When Will I See You Again" (released in 1973, but not a hit until 1974). "When Will I See You Again" was used in a 2002 and 2006 advertising campaign by the Food Standards Agency...
(Wikipedia: The Three Degrees)