The Overture Center glitters in downtown Madison, WI, hosting orchestra, musical theater, opera, and many other fine art performances. Deep in the heart of this gem lies the Overture Concert Organ, a 174 ton behemoth commissioned by the Madison Symphony Orchestra and built into the main performance hall. Greg Zelek, Principal Organist of the Madison Symphony Orchestra, delivers masterful performances, and is joined by Mark Hetzler, Professor of Trombone at the University of Wisconsin-Madison.