The document provides information about classical period music including forms, composers, and historical context. It discusses the sonata, concerto, and symphony forms which developed during this period. Specifically:
- The sonata is a multi-movement work for solo instrument featuring three standard movements - fast, slow, then fast or moderate. Sonata allegro form involves an exposition, development, and recapitulation. 
- The concerto is a multi-movement work for solo instrument and orchestra, intended to showcase the soloist. It typically has three movements - fast, slow, then fast.
- The symphony is a multi-movement work for full orchestra. It usually has four movements -