# Jacek Laszczkowski

> Polish opera vocalist

**Wikidata**: [Q1676923](https://www.wikidata.org/wiki/Q1676923)  
**Source**: https://4ort.xyz/entity/jacek-laszczkowski


## References

1. Freebase Data Dumps
2. BnF authorities
3. Integrated Authority File
4. MusicBrainz
5. Virtual International Authority File
6. CiNii Research
7. IMDb
8. Virtual Study of Theatre Institute