# Sergei Protopopov

> Russian avant-garde composer and music theorist

**Wikidata**: [Q2272938](https://www.wikidata.org/wiki/Q2272938)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Sergei_Protopopov)  
**Source**: https://4ort.xyz/entity/sergei-protopopov


## References

1. Integrated Authority File
2. Virtual International Authority File
3. BnF authorities
4. Musicalics
5. International Standard Name Identifier
6. MusicBrainz
7. International Music Score Library Project
8. Discogs
9. CONOR.SI