The Northampton, Massachusetts Center for the Arts was the venue for the last of three concerts in the annual "A World of Piano Series". The artist for the last concert was Dave Burrell. Alone and sitting at a piano in the front of a mid-size room, Burrell captivated the packed house with the sound he produced with his exceedingly long, lithe fingers which when they touch the keyboard become a logical extension of it. Logical, but more importantly, human. It is important to Burrell that hi