MUSIC / Thorson & Thurber - ICA, London SW1

Adrian Jack, who also writes for the Independent, ran a piano- based concert series at the ICA this spring: his comeback after several years' absence, and a lift for that languid white ghetto. Strong players including Joanna MacGregor, Dave Smith, Andrew Ball and Noriko Kawai favoured games of post-Minimalist skill: Rzewski, Ruders, Gerald Barry and Benedict Mason.

The series finished on Sunday with the still-potent uproar of Bartok's Sonata for two pianos and percussion, played wonderfully by the Denmark-based piano duo Thorson & Thurber with the percussionists Soren Monrad and Per Jensen. Bo Holten's long drumming session Ancher Erectum, also with Monrad and Jensen, sounded stunning. Written in 1984, it went enjoyably for Afro-jazz pile-ups and ringing aureoles struck from fusions of marimbas, xylophones and chimes.

Cheap Attraction was a characteristically nippy, elegant and star- struck collage of Gershwin and 'White Christmas' that Jack wrote for Thorson & Thurber in 1990. Vagn Holmboe's softer-centred Bartokian Epos, and Ligeti's Three Pieces for two pianos, running like smoke over the keyboards, completed a challenging programme.