Sondra Steele, a member of the popular 1940s song and piano duo of Jon and Sondra Steele, died of natural causes Jan. 24 at her home in Tarzana. She was 84.

The Steeles are best known for their million-selling 1948 recording of “My Happiness,” which became the nation’s bestselling record. Written in 1933, it earned the duo the Cash Box Award for the most popular U.S. jukebox recording at the time.

The Steeles, who recorded numerous albums and singles on various labels, also had their own network TV shows in the early 1950s.

The popular club and casino headliners performed at some of the most popular night spots in Hollywood, including the Trocadero, Mocambo, Ciro’s and the Cocoanut Grove. They also performed in the casino showrooms of the Last Frontier and El Rancho Vegas.

Jon Steele died in 1987.

Steele is survived by a son and two grandchildren.

The family suggests donations in Steele’s name be made to the Alzheimers Foundation.