Daniel Vening has joined the roster of Askonas Holt for worldwide general management. The British bass will be represented by Angelica Conner and Charlotte Bateman. Vening is a member of the International Opera Studio of the Bayerische Staatsoper and this season sings Arnold in “Die Englische Katze,” Gardener in “La traviata,” Court Clerk in “Rigoletto,” the Prison Guard in “Tosca” {…}