DJ Soul Sister and the Charitable Film Network kick off the "Musically Speaking" film series Monday, Aug. 6 with a screening of Thunder Soul at Cafe Istanbul. Produced by Jamie Foxx, the documentary takes a feel-good look at the reunion of Houston's Kashmere High School Stage Band. The band reunited to salute their bandleader, Conrad "Prof" Johnson. In the late 1960s and early 1970s, Johnson transformed the jazz and into a funk band and entered it in band competitions around the nation, breaking race barriers in many places. The band won many competitions and eventually played tours in Europe and Japan.