Piccolo violino part of the obbligato solo for the aria for soprano and bass in Cantata BWV 140, from the autograph manuscript in the Thomasschule.
<bdi><a href="https://en.wikipedia.org/wiki/en:Johann_Sebastian_Bach" class="extiw" title="w:en:Johann Sebastian Bach"><span title="German composer (1685–1750)">Johann Sebastian Bach</span></a>
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<a rel="nofollow" class="external text" href="https://www.bach-digital.de/receive/BachDigitalSource_source_00003263">Digitised manuscript</a>, Bach digital archive, Bibliothek der Thomasschule, Leipzig.