While this night's program by the pianist Imogen Cooper was mostly classics, it was a series of unusual choices that you might say brought out correspondences between them — or rather highlighted the modernity of each. Beethoven, Haydn, and Liszt are all big names but they got that way by pushing boundaries in the substance of the music they wrote, a fact that tends to get smoothed over as we hear the same hit parade. Here however we had the deceptively lovely but out-there late Bagatelles by Beethoven, a late sonata by Haydn that must have influenced Beethoven, Haydn's dutiful, benumbed Variations in F Minor that ultimately break out in a kind of harmonic anguish, a very short but arresting new piece by Julian Anderson played together with Liszt's late expermiental "Bagatelle sans tonalite", and then finally Beethoven's "Eroica Variations". The highlight for me was hearing Cooper's clear and richly colored rendition of Beethoven's Bagatelles at the start, which I had never heard live.