We complete our three-part miniseries on the Kyrie section of the Mass in B minor, focusing on the third movement.  And three is the number of the day -- everything here seems to have a three-part structure, from the largest sections of music down to the smallest cell.  The Rule of Three pervades.

Netherlands Bach Society performs the Mass in B minor (this link takes you directly to the movement we discuss in the episode):

https://youtu.be/3FLbiDrn8IE?t=956

Rule of Three:

https://en.wikipedia.org/wiki/Rule_of_three_(writing)