Hip-hop’s raw vitality and potency are mirrored by the jagged, geometric form of David Garibaldi’s “DJ Jewel.” Formerly a street-graffiti artist, Garibaldi paints urban jazz and hip-hop influenced works. While painting onstage during musical events, Garibaldi was struck with the idea for his performance-art show, “Rhythm & Hue.” Garibaldi describes it as “a dance routine involving painting,” during which he thrills audiences by enthusiastically painting portraits in less than six minutes. During one show, he painted a work completely upside-down before revealing the image as Albert Einstein to an awestruck audience.