CK
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Except for 
in b. 21, in this section (b. 21-31) A1 is devoid of all performance indications and dynamic markings. In the main text we reproduce the markings of [A2] – sotto voce in b. 25, 
in b. 27, 
in b. 29 and in b. 30.
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category imprint: Differences between sources; Corrections & alterations
notation: Verbal indications
