BEST CHILDREN'S PERFORMER -NH MAGAZINE SHOWSWORLD OCEAN DAYSeacoast Science Center6/20 at 12pm And so many summer shows coming! MR. AARON is a multi-instrumentalist performer and composer making music and videos for kids and their grown-ups, ages 0-10. He's a proud father of three amazing girls, and a longtime professional musician with a career playing in bands, musical theatre, and…