Detail of the motet Magnificat, composed by Cornelis Verdonck (1563-1625), printed in  De lofzang van Maria, engraving by Johan Sadeler (1550-1600).

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Music happens in the "now". The sound that no longer exits, that has disappeared, is over, it has become history. Fortunately, memories are left, but those memories are subjective and the human being is also a master in concealing and fading. Music notation is a medium to capture the volatility of music. Thanks to notated music, the piece can still be played later. On the other hand, the notation is no more than a decoction of the artistic sound result that the composer had in mind. Music notation in itself is objective, because the information is the same for everyone, but the interpretation, the translation from notation to sound, remains subjective and time-related. That's a good thing, because it ensures that compositions can always renew themselves.

In addition to sheet music, music recordings have been made since the late 19th century. This makes it possible to listen again to a performance. The unique “now”-moment becomes repeatable. With the current technical possibilities, the amount, the quality and the access to different interpretations has never been so large and easy. And yet music is still being played, and new interpretations are still added.