# Piano Sonata No. 9

> Final completed piano sonata by Sergei Prokofiev

**Wikidata**: [Q2452810](https://www.wikidata.org/wiki/Q2452810)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Piano_Sonata_No._9_(Prokofiev))  
**Source**: https://4ort.xyz/entity/piano-sonata-no-9-q2452810


## References

1. Grove Music Online
2. Library of Congress Authorities
3. MusicBrainz
4. Freebase Data Dumps. 2013
5. Carnegie Hall linked open data