# Mazurka no. 21 in C-sharp minor, op. 30 no. 4

> mazurka composed by Frederic Chopin

**Wikidata**: [Q17586948](https://www.wikidata.org/wiki/Q17586948)  
**Source**: https://4ort.xyz/entity/mazurka-no-21-in-c-sharp-minor-op-30-no-4


## References

1. Grove Music Online
2. MusicBrainz
3. [Source](http://www.musiqueorguequebec.ca/catal/chopin/chofopus.html)
4. [Source](https://musicbrainz.org/work/f82c2d5d-e8d5-3457-b57c-3657f73c74f1)
5. National Library of Israel Names and Subjects Authority File