Piotr Anderszewski makes no compromises. His ever upwardly mobile career may have put to rest the furore surrounding his self-imposed withdrawal from the Leeds Piano Competition (when he decided he hadn't played well enough), but he still shows that same integrity and intellectual rigor in every programme he puts together.

His sold-out Wigmore Hall recital had an austere simplicity. Eight Bach preludes and fugues took up the first half, and a Chopin group of six mazurkas and the A flat Polonaise came after the interval. But, this being Anderszewski, the Bach group was the final sequence from the second book of The Well-Tempered Clavier, moving systematically through the keys from A flat major up to B minor, while the mazurkas were the complete sets of Op 59 and 63, the last published in Chopin's lifetime.

It was stiflingly hot in the hall (air conditioning is promised for next year), but the coherence of Anderszewski's playing was enough to hold the unfaltering attention of the audience. His Bach was typically direct and unadorned. It was an approach that seemed unremarkable to begin with, until you noticed how warmly expressive the left hand was in the A flat Prelude, and what a perfect tracery the chromatic digressions provided in the Prelude in A minor, to be followed by a positively martial presentation of its fugue subject.

That kind of poise and fierce concentration would have been out of place in the mazurkas, of course, but their harmonic twists and unexpected rhythmic displacements were none the less examined in almost forensic detail. This was never just coolly analytic playing; there was real passion driving the quickly quenched climaxes. There was, however, always the suspicion that Anderszewski is less instinctively drawn to Chopin than he is to some other composers. Some splashy moments and the odd over-pedalled phrase in the Polonaise suggested he was pushing too hard, making effortful points rather than naturally musical ones. Yet the singular class of his playing was never in doubt for a moment.