He was hailed as "a remarkable talent" (Opera Magazine) following his college performances as Vaudemont Yolanta, making his European debut at the Opera Comique, Paris, as Benedict Beatrice et Benedict; a performance guided by the mentorship of Regine Crespin. A further invitation followed to sing Francesco Benvenuto Cellini in Orchestre de Paris' 2003 Berlioz cycle under the direction of Christoph Eschenbach.

Adrian made his North American debut during 2004 as Rodolfo in Baz Luhrmann's TONY award-winning production of La Boheme at the Ahmanson Theatre, Los Angeles, subsequently winning a Los Angeles Stage Alliance Ovation Award for Outstanding Performance. This role has featured prominently in his career, with recent engagements including Rodolfo in Francesca Zambello's Royal Albert Hall production, and in South Africa for Cape Town Opera.

Recent operatic highlights have included his mainstage debut at both Scottish Opera and Opera Queensland as Count Almaviva in Barbiere di Siviglia, at English National Opera as Arturo in David Alden's new production of Lucia di Lammermoor, as well as Ismaele Nabucco (State Opera of South Australia), Don Ottavio Don Giovanni (Belle Ile Festival, France), Macduff Macbeth (Scottish Opera Go Round), Perez Koanga (Sadler's Wells) and Jenik The Bartered Bride (Mid Wales Opera). He has also covered Edgardo Lucia (English National Opera), Rodolfo Boheme and Rinuccio Gianni Schicchi (Glyndebourne Festival Opera).

He has performed at many of the major UK opera festivals, with credits including Vakula in a highly acclaimed recording and production of Tchaikowsky's Cherevichki (Garsington Opera), Leicester Maria Stuarda and Tamino Die Zauberflote (Grange Park Opera), Almaviva in Paisiello's Barbiere di Siviglia (Buxton Opera Festival), Lensky Eugene Onegin (Aldeburgh Festival), Don Ottavio Don Giovanni (Opera Holland Park), and Edgardo Lucia di Lammermoor (Iford Festival).

Upcoming engagements include Sam Kaplan Street Scene for the Opera Group at the Buxton Opera Festival, the Aldeburgh Proms, the Young Vic and the Watford Palace Theatre, as well as a return to Opera Queensland.

On the concert platform he has performed with The Royal Scottish National Orchestra at the Edinburgh International Festival (Vaughan Williams Serenade to Music), The Philharmonia Orchestra (Rossini Stabat Mater, Petite Messe Solennelle), The English Chamber Orchestra, The Royal Philharmonic Orchestra at the Royal Albert Hall (Orff Carmina Burana), The Royal Liverpool Philharmonic, Manchester Camerata, L'Orchestre de Paris, Orchestre Léonard da Vinci/Opera de Rouen (Mahler/Schoenberg das Lied von der Erde), The English Festival Orchestra (Verdi Requiem), The Britten-Pears Orchestra (Mendelssohn Lobgesang), the Adelaide Symphony Orchestra, the Queensland Orchestra and the State Orchestra of Victoria, under conductors such as Richard Bonynge, Sir David Willcocks, David Stern, David Parry, Nicholas Braithwaite, Elgar Howarth, Anthony Inglis, Marc Soustrot, Francisco Bonnins, Sergio la Stella, Paul Daniel, Martin Andre, Robin Stapleton, Anthony Inglis and Jose Cura.

Concert venues have included the Royal Albert Hall, Royal Festival Hall, Queen Elizabeth Hall, the Barbican Centre, Fairfield Halls, St John's Smith Square, Symphony Hall (Birmingham), Bridgewater Hall (Manchester), Philharmonic Hall (Liverpool), Usher Hall (Edinburgh), Royal Concert Hall (Nottingham), National Concert Hall (Tokyo), l'Abbaye de Royaumont (France), Ravinia Festival (Chicago), Melbourne Concert Hall, Sydney Opera House and the Adelaide Festival Theatre.

Recent and upcoming concerts include Gardiner Trouble in Tahiti with the Munchen Rundfunkorchester under Ulf Schilmer at the Prinzregentheater (Munich), and Steuermann Der Fliegende Hollander with Melbourne Symphony Orchestra under Oleg Caetani.