Sonata form is the musical form is the form that has been most widely used then any other form. It really toke shape as a main form during the Classical period. It is usually used a first movement in a multi-movement piece and is commonly referred as Sonata-Allegro form. The concept behind it was to try and find a way to organize or categorize musical ideas into a movement based on a particular “key.”
While this form has a formula or approach to it. It is rather rigid and leaves itself to be very open. It uses a 3 part binary form that has an Exposition, Development and Recapitulation. Many composers have developed and expanded this style of music composition. Mozart being the subject of this paper is also one of the composer known for
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The entire first subject is the same as previously stated in the exposition, note for note, rhythm for rhythm. Onto the transition. The transition is now altered and doesn't change key and remains in Bb Major. The transition keeps the same ideas from the beginning of the piece. The notes are varied in the second part of the transition. Before the transition in the exposition built up and ended with the second subject introduced in the key of the transition. The transition in the recapitulation doesn't build as much as it is not preparing for a development. It does prepare a mini development just like the previous one did. The transition ends on the V chord of the key, regardless of how it sounds with the accidentals.
The second subject in the recapitulation is in the exact same form as the exposition. There is one difference that this second subject does and that is, its in the same key as the first subject. In the exposition section in Sonata form, the second subject is supposed to be in the dominant. In the recapitulation, its supposed to remain the same. The second subject in the Mozart stays strict to that “rule.” The second subject in the recapitulation also ends with a V – I into the codetta of the recapitulation. The codetta of the recapitulation is exactly the same as the exposition's codetta with the exception that it is in the key of Bb rather then F. The codetta doesn't