Since then, he has established a reputation as one of the finest pianists of his generation, appearing as a concerto soloist in the subscription series of some of the world’s leading orchestras including the London Symphony Orchestra, Royal Concertgebouw Orchestra, Berlin Radio Symphony, NDR Sinfonieorchester Hamburg, Hamburg Symphoniker, Deutsche Kammerphilharmonie Bremen, Finnish Radio Symphony, Philharmonia Orchestra, London Philharmonic, Royal Scottish National Orchestra, BBC Orchestra of Wales, Radio-France Philharmonic, NHK Symphony, Hallé Orchestra and the Bournemouth Symphony Orchestra for his BBC Proms debut in Summer 2014. 

Recital highlights to date include regular appearances at the Wigmore Hall, Queen Elizabeth Hall (London International Piano Series), in the ‘Piano 4 Etoiles’ series at the Philharmonie de Paris and Théâtre des Champs-Élysées, Piano aux Jacobin Festival, AIX Festival, La Roque d’Antheron International Piano Festival (France) as well as at the Beethoven-Haus Bonn, Klavier-Festival Ruhr, Mecklenburg-Vorpommern Festspiele, Teatro Colón Buenos Aires, Kioi Hall in Tokyo, Symphony Hall Osaka and Seoul Arts Centre. 

Sunwook Kim’s debut recital disc was released on the Accentus label in October 2015, featuring Beethoven’s Waldstein and Hammerklavier sonatas. This was followed by a recording of Franck’s Prelude, choral et fugue paired with Brahms Sonata No.3 and a further disc of Beethoven; Sonata No. 8; Pathetique, Sonata No. 14; Moonlight and Sonata No. 23; Appassionata. His discography also includes two concerto recordings, both on Deutsche Grammophon.