G.A.M.M. is a Swedish (underground) record label which has released 12" singles with artists such as Red Astaire, Beatconductor, Tangoterje, Dubben and 7 Samurai.
G.A.M.M. is an acronym standing for "Godkänt av Mad Mats" ("Approved by Mad Mats" in Swedish). The label has released various bootleg and original releases covering genres such as nu-jazz, broken beat and soul. Mad Mats is a Swedish house/urban dj
References
Gamm (record label) Wikipedia(Text) CC BY-SA