Drummond then worked as a musician for and assistant to the maverick composer and instrument builder Harry Partch.
He performed in the premieres of Partch’s large-scale works Daphne of the Dunes, And on the Seventh Day Petals Fell in Petaluma, and Delusion of the Fury.
Drummond conducted educational workshops, and trained student musicians to play the idiosyncratic instrumentarium.
Drummond was a director of the New York Consortium for New Music for over ten years, and was involved in producing the annual Sonic Boom Festival.
At the time of his death he was Associate Professor and Director of the Harry Partch Institute at Montclair State University, New Jersey.