ch era ▁( B oston ▁Ly ric ▁Opera ▁ 2 0 0 7 ), ▁and ▁Dick ▁Johnson ▁in ▁La ▁f anci ulla ▁del ▁West ▁( Op éra ▁de ▁Montr éal ▁ 2 0 0 8 ). ▁In ▁October ▁ 2 0 1 0 , ▁he ▁made ▁his ▁role ▁debut ▁as ▁Rad ames ▁in ▁Ver di ' s ▁A ida ▁for ▁Opera ▁Queensland . ▁ ▁The ▁title ▁role ▁in ▁Ver di ' s ▁Don ▁Carlos ▁has ▁been ▁an ▁important ▁one ▁in ▁G av in ' s ▁career . ▁He ▁made ▁his ▁Royal ▁Opera ▁House ▁debut ▁in ▁the ▁role ▁in ▁ 1 9 9 6 ▁when ▁he ▁took ▁over ▁from ▁Roberto ▁Al agna ▁in ▁Luc ▁Bond y ' s ▁production ▁and ▁sang ▁it ▁at ▁the ▁Edinburgh ▁International ▁Festival ▁in ▁ 1 9 9 8 ▁as ▁well ▁as ▁in ▁produ ctions ▁at ▁the ▁New ▁Isra eli ▁Opera , ▁Opera ▁North , ▁and ▁Minnesota ▁Opera . ▁In ▁ 2 0 0 9 ▁he ▁recorded ▁the ▁role ▁for ▁the ▁Ch and os ▁Opera ▁in ▁English ▁series . ▁Another ▁key ▁role ▁( also ▁recorded ▁for ▁Ch and os ) ▁has ▁been ▁Don ▁José ▁in ▁Car men ▁in ▁which ▁he ▁made ▁his ▁debut ▁at ▁the ▁Vienna ▁State ▁Opera ▁and ▁which ▁he ▁has ▁also ▁s ung ▁for ▁the ▁English ▁National ▁Opera , ▁Zur ich ▁Opera , ▁Opera ▁Australia , ▁La us anne ▁Opera , ▁Royal ▁Swedish ▁Opera , ▁and ▁the ▁Teatro ▁Real ▁in ▁Madrid . ▁ ▁G av in ▁has ▁s ung ▁the ▁role ▁of ▁Ric c ardo / G ust