Inversion at the 10th in fugue BWV 885

In measure 36 Bach uses the inversion at the 10th:

Once more, we will use the inversion table to confirm that Bach is using the inversion at the 10th:

This is the table of the inversion at the 10th. Sixths inverts as fifths, thirds as octaves and octaves as thirds:

1 2 3 4 5 6 7 8 9 10
10 9
8 7 6 5 4 3 2 1

©2011 José Rodríguez Alvira. Published by teoria.com


    
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