Several of Motown's solo artists who left the label went on to have successful disco songs. Mary Wells, Motown's first female superstar with her signature song "My Guy" (written by Smokey Robinson), abruptly left the label in 1964. She briefly reappeared on the charts with the disco song "Gigolo" in 1980. Jimmy Ruffin, the elder brother of the Temptations lead singer David Ruffin, was also signed to Motown, and released his most successful and well-known song "What Becomes of the Brokenhearted" as a single in 1966. Ruffin eventually left the record label in the mid-1970s, but saw success with the 1980 disco song "Hold On (To My Love)", which was written and produced by Robin Gibb of the Bee Gees, for his album "Sunrise". Edwin Starr, known for his Motown protest song "War" (1970), reentered the charts in 1979 with a pair of disco songs, "Contact" and "H.A.P.P.Y. Radio". Kiki Dee became the first white British singer to sign with Motown in the US, and released one album, "Great Expectations" (1970), and two singles "The Day Will Come Between Sunday and Monday" (1970) and "Love Makes the World Go Round" (1971), the latter giving her first ever chart entry (number 87 on the US Chart). She soon left the company and signed with Elton John's The Rocket Record Company, and in 1976 had her biggest and best-known single, "Don't Go Breaking My Heart", a disco duet with John. The song was intended as an affectionate disco-style pastiche of the Motown sound, in particular the various duets recorded by Marvin Gaye with Tammi Terrell and Kim Weston.