Scottish indie popstars do Americana rather better than their English counterparts, and Isobel Campbell, once the female voice and cellist of Belle & Sebastian, proved she is no exception.

She blew delicate bubbles of sound into the smoky atmosphere of the Komedia - melodic sketches which seemed to disappear before they had time to exist.

Accompanied by the guitar and vocal harmonies of long-term collaborator Eugene Kelly, her songs were augmented by the pedal steel and gentle percussion of her band, as well as her own graceful cello playing.

But although she appeared to have stepped out of the Fifties - briefly joking to that effect - Campbell is hardly a country queen, lacking power in both her voice and onstage presence.

There is a point beyond which shy indie cool cannot carry performers who lack a certain charisma, no matter how delicate and attractive their material may be, and Campbell closely approached it.