For 15 years Nameless Sound has made Houston a more sonically interesting spot. The music education non-profit is rooted in inclusion, whether it's offering children, adults or homeless communities the chance to learn improvised music techniques, or bringing creative music heavy hitters to town to play concerts and teach workshops. For Nameless Sound's classes, director David Dove brings together participants of all skill levels and sculpts a group lesson that encourages contributions in a non-judgy environment. For the 2015-2016 season, the concert-organizing arm of the modest yet powerful outfit presented legendary free jazz pianist Dave Burrell, Scottish free improv vocalist Maggie Nicols and Australian trio The Necks.