- Austrian Honorary Consulate Denver presents "Mozart 265 from Salzburg" Birthday Concert & Party! (1)Fri, Jan 29Online Concert + PartyJan 29, 6:00 PM MSTOnline Concert + PartyThe Austrian Honorary Consulate Denver presents "Mozart 265 from Salzburg", an evening celebrating the 265th Birthday of Mozart from the Marmorsaal, Schloss Mirabell in Salzburg, performed by Colorado native Katie Mahan! Join us Friday January 29th at 6pm for the exclusive concert plus zoom party!