Early examples of sonata form resemble two-reprise continuous ternary form. Sonata form, optional features in parentheses
The sonata form (also sonata-allegro form or first movement form) is a musical structure generally consisting of three main sections: an exposition, a development, and a recapitulation. It has been used widely since the middle of the 18th century (the early Classical period).
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).