Fidelio Vienna was under French military occupation, and most of the audience were French military officers. After this premiere, Beethoven was pressured by friends to revise and shorten the opera into just two acts, and he did so with the help of Stephan von Breuning. The composer also wrote a new overture (now known as "Leonore No. 3"; see below). In this form the opera was first performed on 29 March and 10 April 1806, with greater success. Further performances were prevented by a dispute between Beethoven and the theatre management. In 1814 Beethoven revised his opera yet again, with additional
Fidelio to be broadcast in the USA, over the NBC radio network, in December 1944, by the NBC Symphony Orchestra, featuring soloists from the Metropolitan Opera (though a shortwave broadcast of one act, conducted by Toscanini, had earlier been relayed from a 16 August 1936 performance at Salzburg.) Divided into two consecutive broadcasts, the 1944 performances were later issued by RCA Victor on LPs and CDs. "Fidelio" was the first opera performed in Berlin after the end of the World War II, with the Deutsche Oper staging it under the baton of Robert Heger at the only undamaged theatre, the Theater