Pianist Danilo Perez can pound out a mean montuno or tickle the ivories with a silky ballad. In his most recent CD, "Children of the Light," he emphasizes the jazz side of his multi-faceted career. In this JazzCorner.com Jazz Perspective, producer Reese Erlich discusses how Perez creates new music through what he calls "comprovization" - a combination of composition and improvisation.