Roberta Kelly was born 1942, in Los Angeles, California. The singer scored three hits on the US Billboard Hot Dance Music/Club Play chart between 1976 and 1978. Her biggest hit, "Trouble-Maker", spent two weeks at #1 on that chart.

In 1977, she released Zodiac Lady, a controversial album that Casablanca Records, during the disco heyday, refused at first to release, but imports from Italy swamped the international dance floors, creating a hit for the title track and songs such as "Love Sign". The album is today considered a true classic.

This album spawned a twelve-inch single, "Zodiacs," which had major club and radio play. "Funky Stardust" was released from that album, in addition to "Zodiacs" itself. "Zodiacs" peaked at #24 in the US Hot Dance/Club Play chart in 1977, and at #44 in the UK Singles Chart in 1978. "Love Sign" was released as a single in Italy only. Both "Trouble-Maker" and "Zodiac Lady" were produced by Giorgio Moroder and Pete Bellotte.