While War Memorial Golf Course is echoing with hog calls, Pinnacle Mountain State Park will be filled with a full day of jazz, blues, R&B and rock. The "Pinnacle of Music" festival kicks off at 11 a.m. with Needles St., a local outfit that was known in the '60s and '70s for reimagining rock standards and has now reunited after a 30-year hiatus. Michael Burks, the Camden-born "Iron Man" himself, takes to the stage at noon for a marathon four-hour set of the muscled, soulful electric blues that's brought him national acclaim. Gerald Johnson, KABF disc jockey and member of the eclectic Tuesday's House, takes to the stage at 4 p.m. for a set of blues, jazz and reggae fusion. At 6 p.m., man about town and, doubtless, Little Rock's favorite master of the trumpet Rodney Block brings his fusion of soul, R&B and jazz to the mountains.