<https://www.concertina.net/forums/index.php?/topic/25517-duet-playing-practice-question/#comment-223091>
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"Thanks, seanc,  for asking this question.  I am new to the concertina and though playing/practicing my duet for only a few days have noticed and wondered about the same thing.   Thanks, too, to wunks for some practical solutions.\n \n"
<https://www.concertina.net/forums/index.php?/topic/25517-duet-playing-practice-question/#comment-223015>