In 1969, engineers Malcolm Cecil and Robert Margouleff worked with synthesizer pioneer Robert Moog to develop additional modules for the centerpiece unit of Moog's keyboard empire. The result was T.O.N.T.O. -- the Original New Timbral Orchestra. Built into a collection of gently curving wooden cases, T.O.N.T.O. became the world's largest Moog synthesizer. While Robert Moog headed into the development of the Mini-Moog, Cecil and Margouleff took their baby onto the studio circuit, providing Moog elements for a bewildering variety of album projects and film soundtracks. T.O.N.T.O., like most Moog synthesizers, was notoriously temperamental, requiring constant adjustment -- reports mentioned Cecil being found buried in the back of the beast, tweaking oscillators and adjusting circuits. This bulkiness later led to the replacement of Moog parts with Serge Modular units.