NO WEST

Part retreat, part performance, this two-day festival with the catchy name, organized by Gust Burnsand Jonathan Sielaff, brings together three dozen or so improvisers from the area and from as far as New York and Tokyo. Musicians, dancers, and poets will be sorted into batches of four or five, with some groups playing at a private house during the day and others playing that evening in public (here tonight, in Portland on Sunday). The Seattle concert includes Gregory Reynolds, Eric Ostrowski, and Cristin Miller, among others.