Birthdays in Music Aug 4 Wenzel Sedlak, Bohemian clarinetist and composer, born in Jezbořice, Bohemia (d. 1851) Aug 15 Ignaz von Seyfried, Austrian composer, born in Vienna, Austria (d. 1841) Aug 16 Philipp Jakob Riotte, German composer, born in St. Wendel, Saarland (d. 1856) 1775 Music History by Year 1777