At the age of three, Sills won a "Miss Beautiful Baby" contest, in which she sang "The Wedding of Jack and Jill". Beginning at age four, she performed professionally on the Saturday morning radio program, "Rainbow House", as "Bubbles" Silverman. Sills began taking singing lessons with Estelle Liebling at the age of seven and a year later sang in the short film "Uncle Sol Solves It" (filmed August 1937, released June 1938 by Educational Pictures), by which time she had adopted her stage name, Beverly Sills. Liebling encouraged her to audition for CBS Radio's "Major Bowes' Amateur Hour", and on October 26, 1939, at the age of 10, Sills was the winner of that week's program. Bowes then asked her to appear on his "Capitol Family Hour", a weekly variety show. Her first appearance was on November 19, 1939, the 17th anniversary of the show, and she appeared frequently on the program thereafter.