Concert Hall, Hong Kong City Hall / Hong Kong / April 26, 2021 / Ernest Wan / The 32-year-old, Berlin-based pianist Chiyan Wong came back to his hometown of Hong Kong amid the pandemic to play a solo recital of a J S Bach-inspired programme, one that grew better and better as it progressed. It opened with Felix Mendelssohn’s Prelude and Fugue in E minor, Op 35 No 1 (1837), which pays homage to Bach not only with its genre but also with its surprising inclusion of a chorale near the end. In Wong’s hands, the torrential prelude sounded suitably tumultuous and agitated, but the moody fugue, whose pages of accelerandi call for the highest level of control to achieve their cumulative and eventually cathartic effect, was let down by often lurching forward suddenly and impetuously. The pianist was perhaps so carried away by his passion that he skipped several bars of music in the middle. The centrepiece of the programme was Bach’s Goldberg Variations edited by Ferruccio Busoni (1914), who omits as many as …