2012-present – Sadaharu Muramatsu

2006-2010 – Sarah Grace Williams

• 2011 – Bernard Walz (guest)
• 2011 – Sadaharu Muramatsu (guest)
• 2011 – Geoffrey Gartner (guest)
• 2011 – Cristian Cimei (guest)
• 2010 – Bernard Walz (guest)
• 2010 – Cristian Cimei (guest)
• 2006 – Philip Chu (guest)

2005 – Paul Dhasmana

1995-2004 – Solomon Bard

• 2004 – Carolyn Watson, Philip Chu (guests)
• 2004 – Matthew Wood (guest)
• 2002 – Erick Fackert (guest)
• 2001 – Edie Rens (guest)
• 1999 – Ivan Ungar (guest)

1986 – 1994 – Matthew Krel

1985 – 1986 – Carl Hammond

1981- 1984 – Rita Fin

• 1981 – Ted Smith (guest)

1980 – Peter Crane, Elizabeth Jones (Choral)

1979 – Richard Gill, Peter Crane

1978 – Richard Gill, Peter Crane, Anatole Korobko (Choral)

1977 – Peter Crane

1977 – John Liddy

1975 – 1976 – Graeme Russell

1972-1974 – Richard Gill

1971 – Leonard Burtenshaw

1969 – Richard Gill