His awards include a Fulbright Scholarship to study in 1965–66 with Henri Pousseur in Brussels and at the Cologne Courses for New Music,[5] and a composition grant from the National Endowment for the Arts.
[2] For over three decades Grayson has given concerts and seminars for the Yamaha Music Education Foundation and has visited Japan many times to perform and teach.
he has taught improvisation courses at the Showa Academy of Music in Kawasaki, Japan, and was also invited to give seminars and performances at conservatories in Taiwan, China, and Vietnam.
He has been a featured performer at several US national piano pedagogy conferences and was twice invited to give master classes in improvisation at the Oficina de Música Festival in Curitiba, Brazil.
Three of Grayson's electronic keyboard works were performed at an historic University of Massachusetts, Lowell concert featuring the re-creation of George Antheil's complete Ballet Mécanique.