# Hm...
**Wikidata**: [Q12019837](https://www.wikidata.org/wiki/Q12019837)  
**Source**: https://4ort.xyz/entity/hm-


## References

1. Virtual International Authority File
2. MusicBrainz
3. Czech National Authority Database
4. [Regional Database of the Central Bohemian Research Library in Kladno](https://ipac.svkkl.cz/arl-kl/cs/detail-kl_us_auth-0331515-Hm-hudebni-skupina)