A screening of Pilgrimage From Scattered Points, Luke Fowler's impressionistic portrait of composer Cornelius Cardew, made sense of much heard at this tenth anniversary of Scotland's festival of left-field music and sound. Cardew was a master of making unlikely ideas work.

This applied to a set by the heroic Glasgow Improvisers Orchestra as much as it did to The One Ensemble Orchestra's mix of klezmer and choral keening and to the charming instrumental sketches of pianist Bill Wells, who reunited his 2004 cross-discipline quartet with trombonist Annie Whitehead and German electronicists Barbara Morgenstern and Stefan Schneider for their live debut. The addition of Teenage Fanclub guitarist Norman Blake added even warmer textures to an evening begun at the Changing Room Gallery with Scando/East European trio Nalle, and continued by Nils Okland and Hakon Stene's fiddle and percussion.

The upbeat feel continued with Japanese lo-fi trio Nagisa Ni te's UK debut. Melody eventually gave way to Justice Yeldham's solo schtick - blowing into a sheet of amplified glass until it breaks - and the sax/bass/drum power trios of Zu and the Thing produced a groovy cacophony.

The centrepiece was Kaffe Matthews' remarkable trio, along with pipers Jarlath Henderson and Chris Gibb. An adjunct to Matthews' Sonic Bed_Scotland installation in the Tolbooth's attic, pipes were sampled, bent out of shape and bounced right back in a performance as thrillingly 21st century as harpist Zeena Parkins' duo with Ikue Morie was later on. It was a weekend that understood tradition but took it somewhere else entirely.