Mieszko Talarczyk was the lead singer and guitarist of the Swedish grindcore band Nasum, Genocide Superstars, Krigshot and Charles Harfager. Known for his engineering and production abilities, he co-founded Soundlab studios with Millencolin guitarist Mathias Färm.

His death was confirmed when his body was identified on February 17th, 2005 (he was killed in the Tsunami disaster, in Thailand). Anders Jakobson officially announced that Nasum will no longer continue without him (May 26th, 2005).

Mieszko also had his own studio, Soundlab, where various metal bands (such as Insision,
Paganizer or Coercion) recorded albums, as well as him being somewhat of a cult producer.