Final answer:
The music of the Classical era is characterized by tonic-dominant harmony, constant change in mood, and terraced dynamics.
Step-by-step explanation:
The music of the Classical era is characterized by tonic-dominant harmony, which refers to the use of chords based on the key of the piece. This harmonic structure creates a sense of stability and balance in the music. Another significant characteristic is the constant change in mood. Composers during this period aimed to create music that expressed a range of emotions and shifted between contrasting musical ideas. Lastly, the Classical era is known for its use of terraced dynamics. In this technique, the volume of the music changes abruptly rather than gradually, creating a distinct contrast between loud and soft sections.
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