On this occasion, using instruments ranging from snare-size drums to a giant, 900-pound slice of a tree trunk mounted on a movable platform, the 14 musicians created waves of percussive sound that seemed to turn Carnegie Hall itself into a resonant cavity covered with animal skin.
32.
In 1960, the company returned to mechanical action technology ( while continuing to build electropneumatic action instruments as well ) and has since built over two hundred tracker action instruments ranging in size from a single manual portable Continuo of four stops to two, three, and four manual organs.