gns have been omitted in those cases where the passage to be repeated is longer than the incipit. 
          Where a vocal work begins with an extended instrumental introduction, then the introductory bars are included as well as the beginning of the vocal passage.</p>
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        <p> </p>
        <h3><a name="sources">Sources</a></h3>
        <p>The list of sources only registers those sources – manuscripts as well as printed e