:orphan:

Double Score
============

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

*Download:* :download:`double_score.py <downloads/notation_engraving_abjad_pymusicxml_tweaks_double_score/double_score.py>`

Records two performances, turns them into scores, renders to abjad, and sticks them together!

*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/double_score.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/double_score.mp3" style="width:100%;max-width:520px"></audio></div>

.. code-block:: python

   import abjad
   from scamp import *
   import random

   # one way of setting an initial tempo
   s = Session(tempo=100)
   oboe = s.new_part("oboe")
   bassoon = s.new_part("bassoon")


   # define a function for the oboe part
   def oboe_part():
       # play random notes until we have
       # passed beat 7 in the session
       end_beat = s.beat + 8
       while s.beat < end_beat - 1:
           pitch = int(random.uniform(67, 79))
           volume = random.uniform(0.5, 1)
           length = random.uniform(0.25, 1)
           oboe.play_note(pitch, volume, length)
       # end with a note of exactly the right
       # length to take us to the end of beat 8
       oboe.play_note(80, 1.0, end_beat - s.beat)


   # define a function for the bassoon part
   def bassoon_part():
       # simply play quarter notes on random
       # pitches for 8 beats
       end_beat = s.beat + 8
       while s.beat < end_beat:
           bassoon.play_note(
               random.randint(52, 59), 1, 1
           )


   print("FIRST SCORE")
   s.start_transcribing()
   # start the oboe and bassoon parts as two parallel child processes
   s.fork(oboe_part)
   s.fork(bassoon_part)
   # have the session wait for the child processes to finish (return)
   s.wait_for_children_to_finish()
   performance = s.stop_transcribing()
   score1 = performance.to_score()

   print("SECOND SCORE")
   performance2 = s.start_transcribing()
   # start the oboe and bassoon parts as two parallel child processes
   s.fork(oboe_part)
   s.fork(bassoon_part)
   # have the session wait for the child processes to finish (return)
   s.wait_for_children_to_finish()
   s.stop_transcribing()
   score2 = performance2.to_score(title="Score 2")

   # Header for score 1
   header1_block = abjad.Block(name="header")
   header1_block.items.append('piece = "First Piece"')

   score1_block = abjad.Block(name="score")
   score1_block.items.append(header1_block)
   score1_block.items.append(score1.to_abjad(wrap_as_file=False))

   # Header for score 2
   header2_block = abjad.Block(name="header")
   header2_block.items.append('piece = "Second Piece"')

   score2_block = abjad.Block(name="score")
   score2_block.items.append(header2_block)
   score2_block.items.append(score2.to_abjad(wrap_as_file=False))

   lilypond_file = abjad.LilyPondFile(items=[score1_block, score2_block])
   abjad.show(lilypond_file)
   # abjad.persist.as_pdf(lilypond_file, "doublescore.pdf")