Williams, who has been living in San Francisco for four decades.
Williams was born in Baltimore, the home of the Peabody Conservatory. Her musical talents were recognized early, and she studied the classics at the conservatory as a teenager. But, as she tells it, she never really took to Rachmaninoff, and once she heard jazz, she was instantly converted, turning her back on the conservatory tradition. Fortunately, her piano teacher was also a jazz lover, and he encouraged her conversion. She was soon playing professionally, and even spent time in the quartet of Philly Joe Jones, one of the greatest drummers in modern jazz.
In 1976 she made the first recording under her own name and the next year moved to San Francisco, where she accompanied visiting soloists and played her own gigs at two internationally known local jazz clubs, the Blackhawk and the Keystone Corner. She was the house pianist at the latter venue for a while and even released a recording of a trio performance from the former.
In the 1990s she began to work and record more in a trio setting and as a soloist, and her reputation began to spread. She developed a small but dedicated following but has never achieved commercial jazz success, in the United States at least. Instead, she has created a career on her own terms; she plays only in selected places that she finds sympathetic, avoiding noisy clubs and the carnival atmosphere of most jazz festivals.