Born Carol Morvan in Providence, Rhode Island to parents Frank and Claudia (Rainville) Morvan,[1] she began singing professionally when she was 14, although for a time in the 1970s she worked as a legal secretary in Raleigh, North Carolina.

By 1961, success at the Newport Jazz Festival led to albums for Columbia Records.

In 1983 she found a nickel under her carseat and brought it to a psychic who told her she should sign with Concord Records; then she had some successes touring in Japan.

[5] In April 2016 Sloane was among the inductees into the Rhode Island Music Hall of Fame (RIMHOF).

[7] Sloane: A Jazz Singer, a documentary feature film profiling her career, is currently in production.