"Bist du bei mir" (If you are with me), BWV 508 is an
aria in the 1725 Notebook for Anna Magdalena Bach (No.
25). It was therefore attributed to Johann Sebastian
Bach, but the melody is part of the Gottfried Heinrich
Stölzel opera Diomedes, oder die triumphierende
Unschuld that was performed in Bayreuth on November 16,
1718. The opera score is lost. The aria had been part
of the Sing-Akademie zu Berlin music library and was
considered lost in World War II until it was
rediscovered in 2000 in th...(+)
"Bist du bei mir" (If you are with me), BWV 508 is an
aria in the 1725 Notebook for Anna Magdalena Bach (No.
25). It was therefore attributed to Johann Sebastian
Bach, but the melody is part of the Gottfried Heinrich
Stölzel opera Diomedes, oder die triumphierende
Unschuld that was performed in Bayreuth on November 16,
1718. The opera score is lost. The aria had been part
of the Sing-Akademie zu Berlin music library and was
considered lost in World War II until it was
rediscovered in 2000 in the Kiev Conservatory. The
continuo part of BWV 508 is more agitated and
continuous in its voice leading than the Stölzel aria;
it is uncertain who provided it, as the entry in the
Notebook is by Anna Magdalena Bach herself. In an essay
in the Bach-Jahrbuch 2002, Andreas Glöckner speculates
that either she obtained the song from the inventory of
the Leipzig Opera that had gone bankrupt in 1720, or
that it was simply a favourite known to nearly everyone
in Leipzig that was particularly suitable for
Hausmusik
Source: Wikipedia
(https://en.wikipedia.org/wiki/Bist_du_bei_mir).