Tonal quality refers to the character or color of a sound, which helps distinguish one sound from another. It is influenced by factors such as the source of the sound, the method of production, and the environment in which it is heard. For example, the tonal quality of a piano differs from that of a violin, even when playing the same note. In music, tonal quality is essential for conveying emotion and setting the mood. Musicians often manipulate tonal quality through techniques like vibrato or dynamics to enhance their performance. Understanding tonal quality can improve both listening and playing experiences.