The Sacred Cantata BWV 120 "Gott, man lobet dich in der Stille " (God, they praise you in the stillness of Zion) was composed by J.S. Bach in Leipzig for Inauguration of the Leipzig Town Council. in 1729 or earlier. The cantata is scored for soprano, alto, tenor & bass soloists; 4-part Chorus; and orchestra of 3 trumpets, timpani, 2 oboes d'amore, 2 violins, viola & continuo.
The Secular Cantata BWV 120a "Herr Gott, Beherrscher aller Dinge" (Lord God, ruler of all things) was composed by J.S. Bach in Leipzig for a Wedding c1729. This two-part cantata is scored for soprano, alto, tenor & bass soloists; 4-part Chorus; and orchestra 3 trumpets, timpani, 2 oboes d'amore, 2 oboes, 2 violins, viola, continuo. The cantata is incomplete in its music, but complete in its text.
Cantata BWV 120b "Gott, man lobet dich in der Stille" (God, praise waiteth Thee in the temple) was composed by J.S. Bach in Leipzig for the 200th Anniversary of the Augsburg Confession in 1730. The text of this cantata was preseved but the music lost.
All 3 cantatas (BWV 120, BWV 120a & BWV 120b) were adapted from a lost Köthen original.
The discography pages of both BWV 120 & BWV 120a on the BCW have been revised and updated. See:
Cantata BWV 120 -Complete Recordings (14): http://www.bach-cantatas.com/BWV120.htm
Cantata BWV 120 - Recordings of Individual Movements (1): http://www.bach-cantatas.com/BWV120-2.htm
Cantata BWV 120a - Complete Recordings (3): http://www.bach-cantatas.com/BWV120a.htm
Cantata BWV 120a - Recordings of Individual Movements (3): http://www.bach-cantatas.com/BWV120a-2.htm
The revised discographies includes many listening/watching options as part of the recording details. When you click a link to video/audio, a new window will open above the discography page and the video/audio will start to play.
I also put at the BCW Home Page: http://www.bach-cantatas.com/
2 audios & 2 videos of the cantatas. A short description below the audio/video image is linked to the full details at the discography pages.
I believe these are the most comprehensive discographies of both cantatas. If you are aware of a recording of BWV 120 and/or BWV 120a missing from these pages, or want to correct/add details of a recording already presented on the BCW, please do not hesitate to inform me.
You can also read on the BCW the recent discussion of these cantatas in the BCML (4th round): http://www.bach-cantatas.com/BWV120-D4.htm