Example 27: The
three-layered structure beginning bar 137 in the development
The importance of the minor third (the inversion of the
diminished seventh of Réti's motif Ia on page 46) as a "background unitive
force throughout the sonata" is also emphasised by Walker.
He notes that the first few bars of the Scherzo show rising minor thirds, while
bars 15 to 20 shows a restoration of balance in the use of falling thirds, as
shown in Example 28:
