What contrasts did music often feature?

In classical Western music, contrasts often occur:

- In dynamics, such as loud (forte) and soft (piano) sections

- In timbre, such as using different instruments or sections of the orchestra

- In tempo, such as fast (allegro) and slow (adagio) sections

- In texture, such as thick (homophonic) and thin (polyphonic) sections

- In tonality, such as major and minor keys