Finnish pianist-composer Olli Mustonen’s recordings of Preludes and Fugues by Bach and Shostakovich were released in 1999 and 2004. “Perhaps only an artist as innovative and convincing as Mustonen could have made it work as well as it does,” wrote BBC Music Magazine of the first volume. Of the second, Gramophone wrote that “one cannot deny either the brilliance or imagination of his playing”. Mustonen boldly alternates between the composers’ works: Andrew McGregor wrote for the BBC that “it becomes harder to hear where Bach ends and Shostakovich begins, and less important to separate them … I recommend it without hesitation or reservation.” Mustonen’s 1998 recording of Beethoven’s Diabelli Variations “contains moments of absolutely spellbinding playing, with textures of wonderful clarity and a deeply imaginative approach to the music,” said BBC Music Magazine of an interpretation still considered iconoclastic today. It is reissued here along with a second disc of Beethoven featuring works including the E major sonata op. 109.