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Holger Wiesenberg
Tonmeister (VdT), Dozent/Trainer, Projektleiter , Jaggo Media GmbH, HvH.Ton.Licht.Eventdesign, AVIXA freelance Trainer
Tonmeister (VdT), Dozent/Trainer, Projektleiter , Jaggo Media GmbH, HvH.Ton.Licht.Eventdesign, AVIXA freelance Trainer