• Exposition
  • Intro (optional) - Often in a slower tempo - This section if often totally separate from the rest of the work and does not appear in the recapitulation.
    • A comparison of the intro/exposition with the recapitulation should help separate the intro from the exposition
    • Many works do not have an introduction
  • 1st tonal area (1st theme group) - I
    • Multiple thematic ideas
  • transition - V/V (in minor III can substitute V)
  • 2d tonal area (2d theme group) - V
    • Haydn uses the same themes as the first tonal area
    • Mozart and subsequent composers use different and  contrasting thematic ideas.
  • Closing (codetta) - V
    • A unit or section that appears after the last strong cadence on V of the exposition
    • In minor keys the codetta might function as a retransition to the tonic - Mozart Symphony 40 in g minor.
• Development
  • Uses material from the exposition
  • Methods for "development" may include
    • Sequence
    • Circles of fifths
    • Imitation
    • Appearances of main themes in different keys.
    • A complete statement of the first theme group in a different key is called a "false recapitulation". Haydn often introduced the principal theme in the middle of the development. 
  • Explorations in various keys
    • Keys are usually either closely related to the tonic key or related by mode mixture
    • Avoids the tonic key
  • the development often ends with a Retransition which is a section that prepares the return to the tonic key of the recapitulation.
• Recapitulation
  • 1st tonal area - I
  • transition
  • 2d tonal area - I
  • Coda - I
    • Can range from simple statement of the codetta in the tonic key to a complex section that touches upon various keys.

Terms

Codetta: A unit or section that appears after the last strong cadence on V of the exposition

Retransition: A section that leads back to the tonic or to previous material.

Alternate terminology:

1st (2d) Tonal Area, 1st Group, 1st Theme Group, 1st Theme