Jocelyn Pook is best known as the composer of the score for Stanley Kubrick's film Eyes Wide Shut, and this concert combines music from the movie with numbers from her latest album, Untold Things. The line-up of Pook's ensemble - which features virtuoso vocalists from Iran and Sri Lanka, a master of the Arabian qanun (a relative of the zither), synthesisers, samplers and string quintet - suggests a dizzying diversity of styles and musics. Pook's role is similarly multifarious: she is composer, viola player, vocalist, and keyboardist. Adding to this elaborate mix is a subtle, disturbing video-track by Yugoslavian artist Dragan Aleksic.

However, instead of an exciting melange of different cultures, media and music, Pook's work explores a narrow expressive range. She writes mostly slow and mostly melancholy music. Even when she incorporates the soaring vocal talents of Manickam Yogeswaran and Parvin Cox, or the spellbinding dexterity of Abdullah Chhadeh's qanun playing, she cloaks them in a veil of enervating harmonies and cliched melodic accompaniments.

It's not that individual numbers are without interest or innovation. Singer Melanie Pappenheim demonstrates her remarkable gift for singing poetry backwards in Butterfly Song, a deconstruction of a text by James I that Pook wrote for the TV film Butterfly Collectors. The concert opens with an engaging fantasy on messages left on Pook's answerphone, in which tiny fragments of speech are turned into sumptuous instrumental melodies. But Pook's most audacious use of sampling comes in Arsenal: Trevor's Conversion, in which she crafts a serene charm from the earthy vigour of recorded football chants.

But even here, Pook's music is reflective rather than dramatic. Attractive for four or five numbers, a whole concert of this music requires the sweetest of sweet tooths. Each number begins to sound like an epilogue for an action that never happens. It's a music that demands passivity from its audience, something that is emphasised by the deliberate obscurity of the texts sung in the concert. Pook wants her listeners to bliss out to the sounds of her music, but the trade-off for this narcotic consciousness is monotony.

At the Brewery Arts Centre, Kendal (01539 725 133), tomorrow.