Eddie Kane (
Jack Haley) comes to town to make it as a singer in a vaudeville duet act with Jean Roberts (
Grace Bradley). Unfortunately, he fails an audition at a radio station because he turns out to suffer from "
mic fright." Jean goes off to perform on her own, and Eddie obtains work as an usher at the same radio station instead. While at work, Eddie overhears a motivational radio show called
Wake Up and Live hosted by Alice Huntley (
Alice Faye). He decides to befriend the host and apply the
Wake Up and Live techniques to conquer his fear of microphones. One day, while alone in a studio, Eddie sings into what he thinks is a dead mic as a means of practice and inadvertently goes out live over the air. Audiences across America are charmed by his voice yet nobody knows who he is. A media sensation follows as all attempt to identify the "Phantom Troubadour." Rival radio announcers
Walter Winchell and
Ben Bernie (playing themselves) get involved, each attempting to outdo each other by being the first to unmask the "Phantom." Eddie himself follows along with interest, not realising that it is him. Meanwhile, Alice realises what is going on and begins to manipulate the situation for profit. She tells the radio station she knows who he is and will set up broadcasts of his voice from her apartment for money, but will not disclose his identity; she also does not tell Eddie the truth of the situation, and manufactures several convoluted situations in which he is made to sing into a microphone he thinks is off but is in fact live to air. An increasingly complex farce follows before the truth finally comes to light, and Alice and Eddie end up falling in love along the way. ==Cast==