Voi, che sapete

In "Voi, che sapete," from The Marriage of Figaro, Mozart frequently uses mixture to convey different emotions. It begins with a very cheerful piano introduction in B flat major leading into the first section (m 9-20). This section also comes across as a very standard little happy melody, which fits with the text, as she is talking about a feeling in her heart that she thinks may be love. The only non chordal tones are chromatic passing tones. In the next section, however, things being to change. We start to see secondary dominants (m 25) and major VI chords (m27), which start to portray her confusion of what this feelings really is. Then, at measure 37, we briefly change to A flat major, as her feeling is now also changing from confusion to stress, stress that keeps building and building into 49, where we switch to G minor for 4 measures until something very interesting happens. At this part in the text, the performers anguish starts to build, and Mozart also builds up the music, literally. He starts on a I chord back in B flat it measure 53. In measure 54, he goes up a half step to a ii chord...in measure 55, a II chord. This patterns goes on measure by measure through a iii, III, iv, IV, vii dim/ V, and finally a V. This chromatic building really provides a sense of tensions rising. Then we reach measure 62, where she comes to terms with her languish and decides that she rather enjoys it, and are back to the happy major melody to the end.