Elva Ruby Miller (October 5, 1907 – July 5, 1997), who recorded under the name Mrs. Miller, was an American singer who gained some fame in the 1960s for her series of shrill and off-tempo renditions of popular songs such as "Moon River", "Monday, Monday", "A Lover's Concerto" and "Downtown".

They moved to Claremont, California the following year, where she studied music, voice and composition at Pomona College and involved herself in church and community projects.

[4][5] Miller's success, as with that of Florence Foster Jenkins before her and Wing after her, was largely attributable to the amateurish quality of her singing.

[4][7] Miller sang for American servicemen in Vietnam, performed at the Hollywood Bowl and appeared on numerous television talk and variety shows.

Eventually, public interest in Miller began to wane, and Capitol Records dropped her from its roster in 1968.

[10] Elva Miller died at the Garden Terrace Retirement Center in Vista, California in 1997 at the age of 89.

Two years later, a compilation CD of her work was released on Capitol's Ultra-Lounge label titled Wild, Cool & Swingin': The Artist Collection Volume Three.