Troy "Trombone Shorty" Andrews is a musician's musician. The prodigy started playing music at age 3 and got his big break at age 4 sharing the stage with Bo Diddley. "It was so long ago I can't remember," said Andrews, now 24. "I remember my mom saying I was playing (trombone) and some people crowd-surfed me to the stage, and they put me on the stage, and that was it." He earned his name because he could play a trombone before even being as tall as the horn. Sunday night, Trombone Shorty and Orleans Avenue will play their high-energy set at Harlow's. Opening will be The Nibblers, a seven-piece rock band led by local singer Hans Eberbach and Mumbo Gumbo members Lynn Michael Palmer, Jon W