Overview:Nikolaus Harnoncourt leads the Concentus Musicus Vienna and Arnold Schoenberg Choir in a concert of Bach music at Austria's Kloster Melk Benedictine Monastery. Works included in this celebration of the coming of Christmas are Cantata BWV 61, "Nun Komm, der Heiden Heiland"; Cantata BWV 147, "Herz und Mund"; and Magnificat in D Major BWV 243. Soloists are Christine Schafer, Anna Korondi, Bernarda Fink, Ian Bostridge, Christopher Maltman. With the Concentus Musicus Vienna and the Arnold Schoenberg Choir.