Beethoven's music figured prominently: during the first two seasons of the 'Concerts Spirituels' of 1820–21 and 1821–22 his eight completed symphonies were performed (the 9th was finished in 1824); Leopoldine Blahetka, aged about 11, played the B flat Concerto on 3 April 1820; and the cantatas Meeresstille und glückliche Fahrt and Christ on the Mount of Olives, as well as the Mass in C were given.Thayer's Life of Beethoven, Volume 2, pp. 770-1. By Alexander Wheelock Thayer; eds. Elliot Forbes, Hermann Deiters, Hugo Riemann; ed. Henry Edward Krehbiel. The choir was thought to be much better than the orchestra; the first concerts seem to have been little more than 'run-throughs' with a band of dedicated amateurs ('dilettanti') scraping their way at sight through the works of Beethoven, who referred to the concerts in his conversation books.Thayer's Life of Beethoven, Volume 2 p. 770 By Alexander Wheelock Thayer, Elliot Forbes, Hermann Deiters, Hugo Riemann, Henry Edward Krehbiel.
