Classical music has some important forms that are connected to the time they were created. Here are three key forms you should know about:

1. Sonata Form:

   • Structure: It has three main parts: Exposition, Development, and Recapitulation.
   • Popularity: This form became popular in the late 1700s when public concerts started to grow in number.
   • Statistic: Around 60% of pieces from famous composers like Haydn, Mozart, and Beethoven use this form.

2. Rondo:

   • Structure: It follows a pattern like this: ABACADA.
   • Historical Context: Rondo was often used during the Classical period, especially as the last part of a piece.
   • Usage: Nearly 30% of music from the Classical era features the Rondo form.

3. Theme and Variations:

   • Flexibility: This form lets composers change and experiment with musical ideas.
   • Representation: About 25% of Classical pieces use this technique, showing how unique a composer can be while still following a set style.

These musical forms show us how society and culture were changing during their time. They focus on being clear, balanced, and emotionally rich.