“Nothing to Deplete” is the latest project from Willem de Koch, trombonist/composer and co-founder of The Westerlies, the brass quartet whose music “occupies a lively territory between jazz, Stephen Foster-styled folk and chamber music with bracing melodies and, crucially, an undeniable sense of fun” (Chris Barton, LA Times). Here Willem will premiere a set of original pieces performed by a new ensemble of some of Seattle’s best young improvisers: Ronan Delisle (guitar), Ava Lim (alto saxophone), and Evan Woodle (drums)