# Prelude no. 21 in B-flat major, Op. 28

> composition by Frédéric Chopin

**Wikidata**: [Q16739718](https://www.wikidata.org/wiki/Q16739718)  
**Source**: https://4ort.xyz/entity/prelude-no-21-in-b-flat-major-op-28


## References

1. [Source](https://www.musiqueorguequebec.ca/catal/chopin/chofopus.html)
2. MusicBrainz
3. [Source](http://www.musiqueorguequebec.ca/catal/chopin/chofopus.html)