Watson Henderson, Ruth (Louise)
- Gaynor G. Jones
(b Toronto, Nov 23, 1932). Canadian composer, pianist and organist. She studied the piano at the Toronto Conservatory of Music with Viggo Kihl (1937–42) and Alberto Guerrero (1945–52) and at the Mannes College of Music, New York, with Hans Neumann (1952–4); she also took composition lessons with Oskar Morawetz, Richard Johnston and Samuel Dolin. Her début as a concert pianist was in Toronto in 1952, and she has held posts as organist and choir director in Winnipeg (1957–62) and Kitchener (1962–8), and in Toronto as accompanist to the Festival Singers (1968–79) and the Toronto Children’s Chorus (1978–). A large part of her output consists of well-crafted choral compositions in a predominantly tonal idiom with colourful sonorities, of which the best-known work is the first Missa brevis (1976). She was a prizewinner at the GEDOK competition in Mannheim in ...