High Quality Content by WIKIPEDIA articles! Conradin Kreutzer or Kreuzer (Messkirch in Baden, 22 November 1780 Riga, 14 December 1849) was a German composer and conductor. His works include the opera for which he is remembered, Das Nachtlager in Granada, and Der Verschwender, both produced in 1834. Kreutzer owes his fame almost exclusively to Das Nachtlager in Granada (1834), which kept the stage for half a century in spite of changes in musical taste.