conforms tuple to list before assignment

Abjad · Mar 16, 2024 · 2c8cd20 · 2c8cd20
1 parent 1eb11b6
commit 2c8cd20
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/abjad/score.py b/abjad/score.py
@@ -2577,7 +2577,7 @@ def __init__(
             if isinstance(written_pitches, str):
                 written_pitches = [_ for _ in written_pitches.split() if _]
             elif isinstance(written_pitches, type(self)):
-                written_pitches = written_pitches.written_pitches
+                written_pitches = list(written_pitches.written_pitches)
         elif len(arguments) == 0:
             written_pitches = [_pitch.NamedPitch(_) for _ in [0, 4, 7]]
             written_duration = _duration.Duration(1, 4)