Say Hello To- GWEN WILLIAMS—songbird on The Song of Your Life, tonight on NBC . Gwen decided to be a professional singer when she was 13 years old and won an amateur contest conducted by a radio station in her home state, Florida. In the University of Miami she majored in music, and after getting her degree came to New York , where she sang in night club before Harry Salter, Song of Your Life orchestra leader, heard her and hired her for his show. He says she has a brilliant singing future ahead. Gwen is married to Norman Foley, an executive in music publishing firm, and insists that marriage can go with a career.