Events in Music Apr 12 Weber's opera "Oberon" premieres in London Birthdays in Music Apr 7 Johann Hermann Berens, composer Apr 28 Alexander Stadtfeld, German composer, born in Wiesbaden, Darmstadt, Germany (d. 1853) Deaths in Music Apr 3 Reginald Heber, bishop & hymn writer, dies Apr 13 Franz Danzi, German composer & cellist, dies at 62 1825 Music History by Year 1827