That year, he was awarded the German Opera Scholarship by the Opera Foundation for Young Australians, which granted him a position in the Opera Studio at Oper Köln.

Since relocating to Europe, Luke has developed an impressive career working with companies such as the Salzburger Festspiel, Opéra national de Paris, Oper Köln, Deutsche Oper am Rhein, Volksoper Wien, Oper Dortmund, Oper Leipzig and Oper im Steinbruch. He has amassed a large working repertoire, including in roles such as Figaro in Le Nozze di Figaro); Leporello, Masetto and Commendatore in Don Giovanni; Sarastro and Sprecher in Die Zauberflöte; and Alidoro in La Cenerentola.

Luke has also been active on the concert stage in Europe and Australia with performances including Weihnachtsoratorium (Bach), Nelson Mass (Haydn), Requiem (Mozart), Stabat Mater (Rossini), Erste Walpurgisnacht (Mendelssohn), Requiem (Fauré), Symphony No. 8 (Mahler), and The Bells (Rachmaninoff).