Primarily a soloist, on rare occasions Gould did perform with singers, violinists, or chamber groups. His partners always found him easy to work with, cooperative rather than domineering.
Glenn Gould with Yehudi Menuhin, possibly taken during the taping of a CBC-TV Festival program (broadcast date May 18, 1966), October 1965
Gould's familiarity with music, and piano music in particular, was extensive. However, his concert repertoire, and to a lesser degree his recorded repertoire, were focused on a limited number of composers, in particular Bach, Beethoven and Schoenberg. Other favourite or favoured composers were Gibbons, Handel, Haydn, Mendelssohn, Brahms, Richard Strauss, Sibelius, Berg, Webern and Hindemith. His attitude towards Mozart was ambivalent but he recorded all his piano sonatas.
Gould's notes for Schoenberg's Concerto for Piano and Orchestra, Op. 42, included with the program for Cleveland Orchestra concert, Severance Hall, Cleveland, Ohio, November 26 and 28, 1959. View article with illustrations in HTML format
Stratford Festival ensemble rehearsal: Glenn Gould, Mario Bernardi, Isidor Desser, Harold Sumberg, Charles Dobias, Andrew Benac, Dirk Keetbaas, Stanley Solomon and Isaac Mamott, 1961(?)
Manuscript note from Israeli housewife, December 1958, reading: "Dear Mr. Gould! I am just an ordinary Israeli housewife. I know, you don't care about the public, almost hating us. Nevertheless, I will say thank you from all my heart, for letting us hear you playing. I went home changed for days to come. God bless you!"