 In 1963 he was awarded the Carnegie Travelling Fellowship and toured universities in the United States.From 1967 to 1968 he was Visiting Professor at the School of Music, University of Michigan, Ann Arbor, and from 1968 to 1969 Visiting Professor of Theory and Composition at the State University of New York, Buffalo.He then returned to Britain to lecture at Goldsmiths College at the University of London.