What is the significance of overtone in music and how does it contribute to the overall quality of sound produced?

Overtone in music refers to the higher frequency tones that are produced along with the main tone when a musical instrument is played or a voice sings. These overtones give richness and complexity to the sound, creating a full and harmonious quality. They contribute to the overall timbre or tone color of the sound, making it more interesting and pleasing to the ear.