Assistir Filmes em Português. Part One of the legendary trilogy of television films on Bach with Glenn Gould, directed by Bruno Monsaingeon, now for the first time together in a 3 DVD set. The Question of Instrument (1979), a CBC-Clasart co-production about Bach’s abstract to non-instrumental approach to composition, and performances from the Art of the Fugue, the Chromatic Fantasy, and of the complete D major Partita.