Editing Parsifal (section)

===Chromaticism===
Many music theorists have used ''Parsifal'' to explore difficulties in [[musical analysis|analyzing]] the [[chromaticism]] of late 19th century music. Theorists such as [[David Lewin]] and [[Richard Cohn]] have explored the importance of certain pitches and harmonic progressions both in structuring and symbolizing the work.<ref>[[David Lewin]], "Amfortas' Prayer to Titurel and the Role of D in ''Parsifal'': The Tonal Spaces of the Drama and the Enharmonic Cb/B," in ''Studies in Music with Text'' (New York: Oxford University Press, 2006), 183–200.</ref>{{sfnp|Cohn|1996}} The unusual harmonic progressions in the leitmotifs which structure the piece, as well as the heavy chromaticism of act 2, make it a difficult work to parse musically.