Elaboration of the tonic arpeggio as prolongation in Bach, BWV 801, measures 3-4, per Forte, Allen (1979). <i>Tonal Harmony in Concept and Practice</i>, p.426. Holt, Rinehart, and Winston. <a href="//commons.wikimedia.org/wiki/Special:BookSources/0-03-020756-8" title="Special:BookSources/0-03-020756-8">ISBN 0-03-020756-8</a>; image/audio made from score at the IMSLP.
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IMSLP with colored notes as described by Forte (1979).