The Life and Loves of Tschaikovsky or It Was a Lovely Night at the Ball (German: Es war eine rauschende Ballnacht) is a 1939 German historical drama film directed by Carl Froelich and starring Zarah Leander, Aribert Wäscher and Hans Stüwe. The film portrays the fictional relationship between the Russian composer Pjotr Iljitsch Tschaikowsky and an aristocratic woman who, unhappily married, falls in love with him and decides to secretly support his work financially. It premiered on 13 August 1939 at the Venice Film Festival.