The invocatory Adagio is unique among the 6 Trio Sonatas, making the movements 4 in number. It quickly gives way to a bright Vivace,
with two main themes. The first theme of the Andante is based on melodic intervals of a fourth; the second theme includes progressive intervals
of 2nd, 3rd, 4th, 5th and sometimes 6th; the two themes are combined at the end of this movement. The sassy Un poco Allegro theme also begins
with a fourth. Given Bach's preoccupations with numerology, I wonder if all these 4's are coincidental.
Casavant, Opus 3246 (1975) at Grace Lutheran Church, Champaign, Illinois - Samples by Brett Milan
- Trio Sonata No. 4, BWV 528
Audio track was created with Hauptwerk v. 1 software
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