The Firebird

All but forgotten today, Warner Bros.' The Firebird was based on a once-popular stage mystery by Lajos Zilhany. Prohibited from seeing her actor sweetheart Herman Brandt (Ricardo Cortez) by her tyrannical parents, sweet young Vienesse lass Mariette (Anita Louise) defies authority by regularly visiting Brandt's downstairs apartment. The lovers' signal is a song called "The Firebird," which Brandt sings whenever he wants Mariette to visit him. (allmovie.com)