Mozart During Mozart's employment in Salzburg he wrote a dozen masses. Then once he escaped to Vienna and was free to write whatever he wanted, he started working on another mass. Neal Zaslaw joins Fred to talk about the great C Minor Mass. The Leipzig Radio Chorus and Symphony are conducted by Herbert Kegel in the stunning Kyrie from that Mass. And we get a glimpse of Mozart's operatic asperations, in the Agnus Dei from the Coronation Mass. Delores Ziegler is the alto soloist with the RIAS Chamber Choir, and James Levine conducting the Berlin Philharmonic.