They may be grayer and paunchier than they were in their '60s/'70s heyday, but the musicians who encompass the sprawling soul/funk collective Wheedle's Groove remain commanding performers today. These artists—who heated up Seattle's club scene four decades ago but came to prominence after Light in the Attic's 2004 Wheedle's Groove compilation unearthed several classic tunes—play as if they still have much to prove. In addition, excerpts and outtakes from Jennifer Maas's Wheedle's Groove film doc will be shown at SIFF Cinema at 2:00 p.m. (Fisher Green Stage, Seattle Center, 3:45 pm, $22/$40, all ages)