Carnegie Center Director Sally Newkirk calls Jamey Aebersold “our guy.” The jazz artist from New Albany may be local, but he works on an international level. As a result, the exhibition “Jamey Aebersold: An Improvised Life!” is as big as the world. As a musician, he received the National Endowment for the Arts Jazz Master award in 2014. As an art educator, he recently celebrated 50 years of his “Play-A-Long” series, a unique way to teach jazz. And as a philanthropist, his passions include being involved in anti-smoking campaigns and providing musical instruments to prisoners. Plus, there’s a “Seinfeld” connection.