Young - and not so young. The elixir of life was clearly at work on the second night of the Park Lane Group's week, when the white-haired composer Giles Swayne (born 1946) took his turn with the evening's young artists. Could the PLG have broadened its brief?

It turned out that, so late was the delivery of Swayne's new work, and so full already the diary of the young pianist Daniel Swain, for whom it was intended, that the composer himself had to perform in his own world premiere. Hannah Marcinowicz, the saxophonist who had co-commissioned the piece with Swain, had certainly had enough time to get her fingers round the notes. This was a memorable first performance of Leonardo's Dream.

Swayne has composed seven aptly enigmatic and airborne variations on a theme discovered in one of Leonardo's 1486 notebooks: a sweet melody in mirror-writing, a little puzzle of pictures, words and notation. He responds to it with jazzy nonchalance, with trillings, leaps and bumps shared between saxophone and piano, and always with a witty investigation of the quintessence of the melody and the essence of each instrument.

Swayne's piece revealed more imagination than Ned Rorem's Picnic on the Marne and Richard Rodney Bennett's Sonata for Soprano Saxophone and Piano put together. But this fine team of soloists showed considerable prowess throughout, and Marcinowicz made a feisty case for the saxophone in straight classical music. If only more composers would write for it.

Yet another - and totally unrelated - pianist-swain appeared in this concert. Adam Swayne proved himself a pianist of formidable technique and high intelligence in his performance of Kenneth Leighton's little compendium of 20th-century musical method, Six Studies. He had also commissioned a solo work called Beautiful Cracked Eyes from the Cork-born composer Ailís Ní Ríain - another, less consciously aware gathering of shards and fragments from minimalism to piano-plucking: some sparky ideas, but not much sense of purpose or direction.

Earlier in the evening the violinist Julia Rumley had teased every bright second of invention out of George Benjamin's Three Miniatures and, with Grace Huang (piano), formed an engaging duo for John Adams's Road Movies and Rolf Hind's contrived and lacklustre Das Unenthüllte.

Box office: 0871 6632500. The PLG new year series continues until tomorrow

Editor's choice

• The 100 Best Films of the Decade
• 70 facts you didn't know about Marvel
• The 50 Biggest Movies Of 2010