 The BG was succeeded by the Neue Bachgesellschaft (NBG), with a new set of goals (Bach yearbook, Bach festivals, and a Bach museum).Occasionally however the NBG published newly discovered works, or variants not published in the BGA.For instance the 1740s version of "O Jesu Christ, meins Lebens Licht" was published in NBG XVII1 in 1916 (the 1730s version of the same piece, with a different orchestration, had been published in BG 24, pp.