:orphan:

Key Signature via pymusicxml
============================

*Example script* (scamp): `examples/Notation & engraving/Abjad & pymusicxml tweaks/key_sig.py <https://github.com/MarcTheSpark/scamp/blob/main/examples/Notation & engraving/Abjad & pymusicxml tweaks/key_sig.py>`__

*Download:* :download:`key_sig.py <downloads/notation_engraving_abjad_pymusicxml_tweaks_key_sig/key_sig.py>`

Adds a key signature by exporting through pymusicxml and setting it on the first measure.

*Topics:* :doc:`Notation & engraving › Abjad & pymusicxml tweaks <notation_engraving>`

.. raw:: html

   <div style="border:1px solid #ccc;padding:8px;margin:0.2em 0 0.6em;display:inline-block;max-width:100%"><img src="../_static/media/Notation%20%26%20engraving/Abjad%20%26%20pymusicxml%20tweaks/key_sig.svg" alt="score" style="max-width:100%;height:auto;display:block"></div>

.. raw:: html

   <div style="margin:0.6em 0"><audio controls preload="none" src="../_static/media/Notation%20%26%20engraving/Abjad%20%26%20pymusicxml%20tweaks/key_sig.mp3" style="width:100%;max-width:520px"></audio></div>

.. code-block:: python

   from scamp import *

   s = Session(tempo=120)

   violin = s.new_part("violin")
   s.start_transcribing()

   for _ in range(3):
       for p in [62, 65, 63, 67, 68, 72, 70]:
           violin.play_note(p, 0.7, 0.5, "key: Eb")

   pymusicxml_score = s.stop_transcribing().to_score().to_music_xml()
   pymusicxml_part = pymusicxml_score.contents[0]
   pymusicxml_part.measures[0].key = "Eb"

   pymusicxml_score.export_to_file("KeySig.musicxml")