01About
The Leipzig council elected Bach cantor of the Thomasschule and director of music for the city in 1723, after its first two candidates, Telemann and Graupner, proved unavailable. Spitta's biography records the council's own description of the appointment, that Bach "was considered the best of the candidates, and had been unanimously elected." The Mass in B minor's Kyrie and Gloria were composed as early as 1733; Bach did not return to add the missing Credo, Sanctus, Benedictus and Agnus Dei until the late 1740s. No performance of the complete Mass in B minor during Bach's lifetime is documented; his son Carl Philipp Emanuel performed the Symbolum Nicenum, its Credo movement, at a benefit concert in Hamburg on 9 April 1786. The Goldberg Variations, BWV 988, were printed no earlier than the Michaelmas fair of 1741, as the fourth part of the Clavier-Ubung. The Musical Offering, BWV 1079, grew out of a visit Bach made with his son Wilhelm Friedemann to the Prussian royal court at Potsdam on 7 and 8 May 1747, reported at the time in the Berlinische Nachrichten von Staats- und gelehrten Sachen. It was published at the Leipzig Michaelmas fair later that year, with a preface dedicating the work to Frederick II dated 7 July 1747.