Three years ago the Swedish clarinettist Martin Frost was a recipient of one of the first Borletti-Buitoni Trust awards, which aim to further the careers of outstanding young musicians. He used the funds to commission a concerto from the Finnish composer Kalevi Aho. Here, Frost played the result for the first time with the BBC Symphony Orchestra and conductor Osmo Vanska, who is a long-standing champion of Aho's music.

Frost should be pleased with the vehicle that Aho has produced, for it leaves hardly any aspect of his exceptional technique unexplored, even if few of its ideas are strongly memorable. The half-hour-long Clarinet Concerto falls into five distinct movements whose centre of gravity is a hugely energetic central scherzo, full of abrupt changes of metre and direction.

That's preceded by a dramatic, swirling opening movement and a solo cadenza dominated by tremolos. It's followed by a bittersweet slow movement and an epilogue in which the solo line dissolves into quarter tones and multiphonics, which strike rather an alien note in the context of music that has previously been all too conventionally tonal.

The other large-scale work in Vanska's programme was Rachmaninov's Second Symphony. He had opened his concert, though, with a piece by the New York-based Todd Levin. BLUR: Fragrance Free Mix was composed in 1994 and, according to Levin's programme note, was inspired by an exhibition of work by Damien Hirst and Sarah Lucas.

It's six minutes of brash, noisy, orchestral writing, driven along on an insistent beat in the style of the New York Bang on a Can composers such as David Lang and Michael Gordon. Without any textural ingenuity or moments of surprise, it's harmless enough.

· Broadcast on Radio 3 on May 1.