I’m about to take my level 10 Harmony exam and I’m still kind of unsure about Sonata Form. Could someone give a (brief?) explanation of it? The textbook that I use does have a good explanation, but I’d love to hear another explanation in different words I guess. Thanks!
The question proposed as a duplicate should give the answer you're looking for, but here's some brief detail to get you started.
Part 1: Exposition 1.1 First theme / first key area 1.2 Transition 1.3 Second theme / second key area 1.4 Transition / Ending Part 2: Development 2.1 Development of thematic or other material 2.2 Retransition Part 3: Recapitulation 3.1 First theme / first key area 3.2 Transition 3.3 Second theme / first key area 3.4 Transition / Ending / Coda