Events in Music Music Premiere Nov 20 Ludwig van Beethoven's "Fidelio", his only opera, premieres in Vienna ComposerLudwig van Beethoven Birthdays in Music Nov 1 Alessandro Nini, Italian composer, born in Fano, Pesaro, Italy (d. 1880) Nov 14 Fanny Cacilia Mendelssohn Hensel, German composer, born in Hamburg, (d. 1847) 1804 Music History by Year 1806