# Herbert Janssen

> German opera singer (1892-1965)

**Wikidata**: [Q85812](https://www.wikidata.org/wiki/Q85812)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Herbert_Janssen)  
**Source**: https://4ort.xyz/entity/herbert-janssen


## References

1. Integrated Authority File
2. Archivio Storico Ricordi
3. Source
4. BnF authorities
5. Czech National Authority Database
6. International Standard Name Identifier
7. MusicBrainz
8. Virtual International Authority File
9. Discogs
10. Freebase Data Dumps. 2013
11. National Library of Israel Names and Subjects Authority File