Conversation so far:
What show was Ruth Etting best known for performing on stage ?
Known as America's sweetheart of song, Ruth Etting's signature tunes were Shine On, Harvest Moon, Ten Cents a Dance and Love Me or Leave Me.
Was Ruth Etting a dancer?
Ruth Etting was supposed to tap dance after singing Shaking the Blues Away but she was not a good dancer and was asked to just walk off the stage.
What films did Ruth Etting act in?
Ruth Etting acted in the following feature films: Roman Scandals, Mr. Broadway, Gift of Gab, Hips, Hips, Hooray! She acted in many short films including Broadway's Like That.
Was Ruth Etting an actress or a singer in the film ?

Question: What did she perform on the radio ?
Self-contained rewrite: What did Ruth Etting perform on the radio?