What is a common characteristic of the first movement in classical symphonic form?

The characteristic of the first movement in classical symphonic form being fast and generally following sonata allegro form is essential to understanding the structure and style prevalent during the Classical period. Sonata allegro form is typically structured in three main sections: exposition, development, and recapitulation.

In the exposition, the main themes are presented, which are often contrasting in character. The development section explores these themes through various keys and manipulations, creating tension and complexity. Finally, the recapitulation brings back the main themes, usually in the home key, providing a sense of resolution.

This movement is typically lively and energetic, which aligns with the overall expressive goals of Classical composers to evoke a range of emotions, but primarily focusing on clarity, balance, and formality in musical structure. This distinguishes the first movement from other sections of a symphony, such as the slower second movement or the more dance-like minuet and trio movements often found later in the work.