CDs by the Dave Robbins Sextet from Vancouver BC and Jay Thomas are featured on this week's episode of Jazz Northwest. Drummer Dave Robbins leads a sextet playing his original music with Brad Turner, trumpet and Mike Allen, tenor sax. The album "Joan of Art" is dedicated to Joan Mariacher, an active booster and benefactor of the Vancouver jazz scene. Seattle trumpet and sax player Jay Thomas is featured on two recent releases on this week's show. "High Crimes and Misdemeanors" pairs him with