This box set comprises all the operas and sacred works Otto Klemperer conducted for EMI Columbia and HMV. Oratorios by Bach, Beethoven, Brahms and Handel are accompanied by operas of Beethoven, Mozart and Wagner. There are also rehearsals and listening playback sessions for the recording of Mozart's Don Giovanni and a Bonus CD with recollections from artists who sang in Klemperer's opera performances. Otto Klemperer deeply loved both the theatricality of opera and the spirituality of oratorios, and these performances from his great Indian Summer represent the fruits of his lifetime of thought and experience in this repertoire.