[1] In 1979 Sullivan joined the faculty at The Royal Conservatory of Music (RCMT) where he taught for the next decade.
He notably was director of the RCMT's composition program from 1985–1989 and in 1986 founded the school's Contemporary Music Ensemble.
[1] Kyla Greenbaum (married name Crowcroft) recorded Sullivan's Piano Sonata No 1 in 1977 in Toronto.
The work successfully premiered by the Center for Contemporary Opera in New York City on 28 March 1987 and was subsequently broadcast on CBC Television on 19 February 1989 in a performance starring Iraina Neufeld.
Notable choreographer-collaborators were William Douglas (Apollon, La Zone d'Or); John Alleyne (The Archeology of Karl, In the Course of Sleeping and Adrian, Angel on Earth); Menaka Thakkar (Untitled, Land of Cards); and Lata Pada (Cosmos, Revealed by Fire.)