He has given recitals at most of the major UK concert halls including the Wigmore Hall, Barbican Concert Hall, Queen Elizabeth Hall, Purcell Room, Bridgewater Hall and St David's Hall. Wass' concerto performances have included Beethoven and Brahms with the Philharmonia, Mendelssohn with the Orchestre National de Lille and Mozart with the Vienna Chamber Orchestra at the Vienna Konzerthaus and the Brucknerhaus in Linz. Wass has also worked with Sir Simon Rattle and the CBSO, the London Mozart Players, the BBC Scottish Symphony Orchestra and the BBC Philharmonic. He also recorded the Poulenc Piano Concerto with the BBC Concert Orchestra and Beethoven 3rd Piano Concerto with the BBC Philharmonic. In June 2003 he appeared in a gala concert at Buckingham Palace to mark the Golden Jubilee of Queen Elizabeth. Current engagements include numerous recitals throughout the UK, including the City of London Festival, Brighton Festival, Wigmore Hall and Sheffield 'Music in the Round' as well as recital debuts in Israel and Sweden.

Ashley Wass' recording of Beethoven 3rd Piano Concerto with the BBC Philharmonic has been issued as a BBC Music Magazine cover CD and he has also recorded Chopin for an EMI disc 'In Tune with the Piano'. He made his debut recording in 1999 with a solo recital disc of works by César Franck for Naxos. Future recording plans include the complete solo works of Arnold Bax and concertos by Bax, Alwyn, Arnold and Tippett for Naxos.