Environment: music21 10.5.0, Python 3.14, macOS.
Summary: the Humdrum importer parses a section-structured kern file to a small fraction of its measures. The kernscores transcription of Chopin's Mazurka Op. 41 No. 2 (mazurka41-2.krn: 69 numbered measures, section labels *>A, *>B, ... with an expansion list) parses to a score whose parts contain 8 measures, numbered 1–8 — the remaining ~61 source measures are silently absent. Content addressed by source measure number (e.g. a text annotation at source measure 64) has no corresponding location in the parse at all.
Expected: either the full expanded sequence of sections, or (if expansion is unsupported) the sections in source order — not a silent 8-measure fragment.
Reproduction:
from music21 import converter, stream
sc = converter.parse("mazurka41-2.krn") # kernscores chopin-mazurkas
part = sc.parts[0]
print(len(part.getElementsByClass(stream.Measure))) # 8; the source has 69 "=N" barlinesSource file: the kernscores chopin-mazurkas set (craigsapp/chopin-mazurkas on GitHub), kern/mazurka41-2.krn.
Environment: music21 10.5.0, Python 3.14, macOS.
Summary: the Humdrum importer parses a section-structured kern file to a small fraction of its measures. The kernscores transcription of Chopin's Mazurka Op. 41 No. 2 (
mazurka41-2.krn: 69 numbered measures, section labels*>A,*>B, ... with an expansion list) parses to a score whose parts contain 8 measures, numbered 1–8 — the remaining ~61 source measures are silently absent. Content addressed by source measure number (e.g. a text annotation at source measure 64) has no corresponding location in the parse at all.Expected: either the full expanded sequence of sections, or (if expansion is unsupported) the sections in source order — not a silent 8-measure fragment.
Reproduction:
Source file: the kernscores
chopin-mazurkasset (craigsapp/chopin-mazurkas on GitHub),kern/mazurka41-2.krn.