Nocturne No. 21 in C minor, Op. posth.

composition for piano by Frédéric Chopin
MusicRecording nocturne Q11431261
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Nocturne No. 21 in C minor, Op. posth.

Summary

Nocturne No. 21 in C minor, Op. posth. is a nocturne[1]. Nocturne No. 21 in C minor, Op. posth. draws 99 Wikipedia views per month (nocturne category, ranking #1 of 1).[2]

Key Facts

  • Nocturne No. 21 in C minor, Op. posth.'s instance of is recorded as nocturne[3].
  • Nocturne No. 21 in C minor, Op. posth.'s instance of is recorded as musical work/composition[4].
  • Nocturne No. 21 in C minor, Op. posth.'s composer is recorded as Frédéric Chopin[5].
  • Nocturne No. 21 in C minor, Op. posth.'s genre is nocturne[6].
  • Nocturne No. 21 in C minor, Op. posth. is part of Nocturnes[7].
  • Nocturne No. 21 in C minor, Op. posth.'s catalog code is recorded as B 108[8].
  • Nocturne No. 21 in C minor, Op. posth.'s catalog code is recorded as C 128[9].
  • Nocturne No. 21 in C minor, Op. posth.'s catalog code is recorded as WN 62[10].
  • Nocturne No. 21 in C minor, Op. posth.'s catalog code is recorded as KK IVb/8[11].
  • 1847 marks the founding of Nocturne No. 21 in C minor, Op. posth.[12].
  • Nocturne No. 21 in C minor, Op. posth. was released on 1938[13].
  • Nocturne No. 21 in C minor, Op. posth.'s tonality is recorded as C minor[14].
  • Nocturne No. 21 in C minor, Op. posth.'s instrumentation is recorded as piano[15].
  • Nocturne No. 21 in C minor, Op. posth.'s title is recorded as {'lang': 'en', 'text': 'Nocturne in C minor, B.108'}[16].
  • Nocturne No. 21 in C minor, Op. posth.'s on focus list of Wikimedia project is recorded as WikiProject Chopin Thematic Catalog Concordance[17].
  • Nocturne No. 21 in C minor, Op. posth.'s form of creative work is recorded as nocturne[18].

Product Details

The following facts are restated verbatim from public-domain and CC0 open-data sources — every line is independently verifiable against the named source's catalog.

MusicBrainz — CC0 open music encyclopedia

  • MusicBrainz ID: a954562c-003a-33df-9e88-b001a759a01c[19]

Why It Matters

Nocturne No. 21 in C minor, Op. posth. draws 99 Wikipedia views per month (nocturne category, ranking #1 of 1).[2] Nocturne No. 21 in C minor, Op. posth. has Wikipedia articles in 6 language editions, a strong signal of global cultural recognition.[20] Nocturne No. 21 in C minor, Op. posth. is known by 8 alternative names across languages and contexts.[21]

References

Programmatic citations — every numbered marker resolves to a verifiable graph row below.

Direct Wikidata claims

  1. [3] . Grove Music Online. Retrieved . wikidata.org.
  2. [4] . wikidata.org.
  3. [5] . Grove Music Online. Retrieved . wikidata.org.
  4. [6] . wikidata.org.
  5. [7] . wikidata.org.
  6. [8] . International Music Score Library Project. Retrieved . musiqueorguequebec.ca. Provenance: wikidata.org.
  7. [9] . Grove Music Online. Retrieved . musiqueorguequebec.ca. Provenance: wikidata.org.
  8. [10] . Grove Music Online. Retrieved . wikidata.org.
  9. [11] . Grove Music Online. Retrieved . wikidata.org.
  10. [12] . Grove Music Online. Retrieved . wikidata.org.
  11. [13] . Grove Music Online. Retrieved . wikidata.org.
  12. [14] . Grove Music Online. Retrieved . wikidata.org.
  13. [15] . Grove Music Online. Retrieved . wikidata.org.
  14. [16] . wikidata.org.
  15. [17] . wikidata.org.
  16. [18] . wikidata.org.

Product details (FDA / USDA / NHTSA public-domain catalog data)

  1. [19] . MusicBrainz (MetaBrainz Foundation). musicbrainz.org.

Class ancestry

  1. [1] . Wikidata. wikidata.org.

Aggregate / graph-position facts

  1. [2] . Wikimedia Foundation. dumps.wikimedia.org.
  2. [20] . Wikidata sitelinks. wikidata.org.
  3. [21] . Wikidata aliases. wikidata.org.

📑 Cite this page

Use these citations when quoting this entity in research, articles, AI prompts, or wherever provenance matters. We aggregate Wikidata + Wikipedia + authoritative open-data sources; the stitched, scored, cross-referenced view is what 4ort.xyz contributes.

APA 4ort.xyz Knowledge Graph. (2026). Nocturne No. 21 in C minor, Op. posth.. Retrieved May 3, 2026, from https://4ort.xyz/entity/nocturne-no-21-in-c-minor-op-posth
MLA “Nocturne No. 21 in C minor, Op. posth..” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 May. 2026, https://4ort.xyz/entity/nocturne-no-21-in-c-minor-op-posth.
BibTeX @misc{4ortxyz_nocturne-no-21-in-c-minor-op-posth_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{Nocturne No. 21 in C minor, Op. posth.}}, year = {2026}, url = {https://4ort.xyz/entity/nocturne-no-21-in-c-minor-op-posth}, note = {Accessed: 2026-05-03}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): Nocturne No. 21 in C minor, Op. posth. — https://4ort.xyz/entity/nocturne-no-21-in-c-minor-op-posth (retrieved 2026-05-03)

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