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Monday, May 09, 2005

Mozart Sonata B flat Major

The A section consists of 2 periods. The first period has a 4 measure phrase which ends on a HC, and an 8 measure phrase which ends on a PAC. There is then a parallel period which ends the A section on a PAC. There is then a short transition, which modulates to the dominant key by measure 21. This is the primary section. The B section (alternating section) begins in measure 21 and continues through measure 41. The only cadence I was really able to pick out was a PAC in measure 36. The rest of the cadences seem to be disguised by the left hand moving the harmonic progressgion along. There is then a 4 measure transition back to the A section, and we have an exact repeat of A. The C section begins at measure 64 and continues through measure 112. This section is very chromatic and developmental. It modulates to the relative minor of the dominant key. The C section leads back to the A section, where we have another exact repeat. I'm going to call this next part D, but I'm not sure if that is exactly correct. D is very similiar to B, especially as far as rhythmic motives go. There is a false return of A at measure 173. Measures 188-199 serve as a transition back to A.

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