Just after Good Shepherd Sunday, we settle in to this comforting pastorale.  Not the famous opening movement -- no, this is another beautiful sicilienne-type dance, a bass aria, in which Bach gives a masterclass on melodic writing in just 5 seconds of music.  Melodic shape, sequence, pedal point, and effective parallel motion in triads -- these are all showcased in the first few measures.  Then, Alex points out his favorite moment, in the B section of the aria: a long note sung by the bass soloist. Du Hirte Israel, höre performed by the Netherlands Bach Society (this link takes you straight to the bass aria "Beglückte Herde"