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children (McPherson, 2005). It is unfortunate that, unlike in the edu-
                     cational contexts of jazz and ethno music, playing by ear is sidelined as
                     soon as a child learns musical notation, particularly given the research
                     findings which highlight its great importance at various stages of educa-
                     tion and in a number of instruments (Green, 2012; Zhukov & Ginsborg,
                     2021). Learning by heart is believed to help students learn more and at
                     the same time enable them to include more improvisation. Students are
                     also reported to have found such learning more enjoyable (Green, 2012).
         68              Playing  by  heart  has  a  long  history  in  Western  classical  music,

                     but there is low agreement among musicians as to the functioning of
                     the memory with respect to musical  performance, and the manner of
                     achieving reliability of such memory (Aiello & Williamon, 2002). Many
           How to Shine on Stage  person that it is best for each musician to devise their own memorization
                     musicians believe that musical memory varies so much from person to

                     methods (Ginsborg, 2002).
                         One of the most common memory training techniques is to repeat a
                     piece from beginning to end without stopping (Lisboa, 2008; Renwick &
                     McPherson, 2000). Each passage reminds the musician of the upcoming
                     passage in the sense of an associative chain. The latter develop quickly
                     and spontaneously and are extremely accurate (Rubin, 2006). The key
                     drawback of this memorization strategy is that we are only successful in
                     recall if we start playing from the beginning. If a memory block occurs,
                     one has to start playing from the beginning (Chaffin et al., 2009).
                         Experienced performers rarely stop and start over. They are aware
                     that memory slips are an inevitable part of live  performance, so they cre-
                     ate a mental map of the piece that enables them to find their way even if
                     a memory slip occurs. This musical map contains points where the per-
                     former can continue playing if a mistake occurs (Chaffin et al., 2002).
                     In such cases, the audience often does not even realize that the perform-
                     er has made a mistake. Access to the necessary musical content is grant-
                     ed by  performance cues built into a hierarchical organization based on
                     the musical structure (Chaffin et al., 2002). The cues represent all the
                     thoughts of the performer during the  performance, e.g. “with feeling”,
                     “songful”, “softer”, or “repeat the note”. These content cues form a men-
                     tal map of the music that allows the performer to monitor the  perfor-
                     mance. Performance cues are deliberately and systematically formed by
                     repeated thinking about certain musical characteristics during practice,
                     and thus eventually become mental automatisms directing the musi-
                     cian’s attention and enabling a conscious guidance of movements which
                     would otherwise be automatic. Content memorizing is significantly more
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