Here's what interests me for tonight, Thursday, June 20: Ken Vandermark & Joe McPhee Duo: heavy improvised jazz by two of the best in the business; NAC 4th Stage, 6pm Lean Left: "a positively apocalyptic quartet: an elemental musical force featuring Grade A international players zoning in and scrambling together rock, jazz, noise and blistering free improv into a highly-charged onstage assault, each member taking their sound to the edge"; NAC 4th Stage, 8pm. (Lean Left also has Ken Vandermark in it.) Dr. John & The Nite Trippers: a legend of New Orleans music; Confederation Park, 9pm. Aloha, Brad