the first printed score only appeared in the early nineteenth century. it was published in the early 1800s in zurich by the swiss musicologist hans georg nägeli. the son of a musically inclined protestant pastor in wetzikon, nägeli showed precocious musical skills. in 1790 he moved to zurich where he took lessons with the swiss pianist johann david brünings, who introduced him to the music of bach. a year later he set up a music shop and in 1794 a publishing house. corresponding with bach's publisher bernhard christoph breitkopf and the widow of c.p.e. bach, he was able to acquire bach manuscripts, including that of the mass in b minor, which he eventually published. his bach publications started with the well tempered clavier in 1801 and the art of the fugue in 1802. his interests later turned to pedagogy and singing: in zurich he set up an institute similar to the sing-akademie zu berlin of carl friedrich christian fasch.