# Johann Sigismund Opitz
**Wikidata**: [Q55911844](https://www.wikidata.org/wiki/Q55911844)  
**Source**: https://4ort.xyz/entity/johann-sigismund-opitz


## References

1. CERL Thesaurus
2. Catalog of the German National Library
3. Répertoire International des Sources Musicales
4. [Source](http://thesaurus.cerl.org/record/cnp00348106)