With more than 40 performers ­shoehorned into the five days of the Park Lane Group's annual Young Artists series, some changes are inevitable. And in the early ­opening slot, a promised Kurtág premiere failed to ­materialise, while in the later concert, none of the announced performers could appear.

The loss of the Kurtág – the composer refused to sanction the performance, apparently – was the bigger disappointment as it promised a substantial new work by a major European composer in a series whose horizons are still too parochial. The same undistinguished home-grown composers dominate the programmes year after year, and as if to underline what had been lost, ­violinist Tamsin Waley-Cohen replaced the Kurtág with the UK ­premiere of ­Lysandra by Barry Guy, which ­succeeded only in being unmemorable. But by then, Waley-Cohen had shown what a fine player she was, projecting George Benjamin's Three Miniatures, Richard Causton's new Fantasia and Air and Ferneyhough's daunting Intermedio alla Ciaconna with fearless intensity.

The later concert's replacements were the Solstice Quartet, whose tidy performances of quartets by Barber and Bartók (his Fifth) were just a little too manicured and meek to be convincing, and the Latvian accordionist Ksenija Sidorova. She must spend much of her time looking for worthwhile pieces to play, and managed one out of four – Berio's Sequenza XIII – though even that isn't the most memorable in the Sequenza series; why is new music for accordion always better to anticipate than to hear?

The Young Artists series continues until Friday. Box office: 0871 663 2500.