For a discussion of some of the musical issues posed by the fugue, see Blum (1987), pp. 22, 59, 70, 71, 73, 158, 159, 164–165, 172, and 222. Blum, David (1987). The Art of Quartet Playing. Cornell University Press. ISBN0-8014-9456-7.
Thayer: Ludwig van Beethovens Leben. quoted in Husarik (2012), p. 54. Husarik, Stephen (Autumn 2012). "Musical direction and the wedge in Beethoven's high comedy, Grosse Fuge op. 133". The Musical Times. 153 (1920): 53–66. JSTOR41703529.
Husarik (2012). Husarik, Stephen (Autumn 2012). "Musical direction and the wedge in Beethoven's high comedy, Grosse Fuge op. 133". The Musical Times. 153 (1920): 53–66. JSTOR41703529.
Husarik (2012), p. 58. Husarik, Stephen (Autumn 2012). "Musical direction and the wedge in Beethoven's high comedy, Grosse Fuge op. 133". The Musical Times. 153 (1920): 53–66. JSTOR41703529.