Fidelio Fidelio Fidelio (originally titled ; English: "Leonore, or The Triumph of Marital Love"), Op. 72, is Ludwig van Beethoven's only opera. The German libretto was originally prepared by Joseph Sonnleithner from the French of Jean-Nicolas Bouilly, with the work premiering at Vienna's Theater an der Wien on 20 November 1805. The following year, helped shorten the work from three acts to two. After further work on the libretto by Georg Friedrich Treitschke, a final version was performed at the Kärntnertortheater on 23 May 1814. By convention, both of the first two versions are referred to as "Leonore". The libretto, with
Unity is Strength the Second Sino-Japanese War. Unity is Strength was jointly written in June 1943 by Mu Hong, also the composer of I Love the Eighth Route Army and a major contributor to the production of the Yellow River Cantata, and Lu Su, another well known Chinese communist musician. Allegedly, the song was written in only three days after the lukewarm reception of an opera they had produced under the same name. After facing criticism that the opera ended too abruptly, the two wrote Unity is Strength as a finale act. The piece was written in a small mountain village in Shaanxi