Sighvatsson Leaving Propaganda to Pursue His Own Filmmaking

Joni Sighvatsson is leaving PolyGram-owned Propaganda Films, which he helped build from a small music video maker into a company with film, TV, commercial, interactive and music projects.

Sighvatsson, who has shared Propaganda’s chairman post with Steve Golin, said he will leave the 8-year-old firm next week to devote more time to making movies, something he said his management duties have prevented. The native of Iceland plans to keep his affiliation with PolyGram, the European entertainment conglomerate controlled by the Dutch electronics giant Philips.

Propaganda’s films have included “Wild at Heart” and Madonna’s “Truth or Dare.” It was also involved in such television projects as “Twin Peaks.”

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* Diana Rathbun was promoted to senior vice president of production at Warner Bros.

* Columbia TriStar Television Distribution named Steve Mosko senior vice president.

* Warner/Chappel Music promoted Greg Sowders to director of film and television.