Final answer:
The distinctive tone quality of a sound in music, which makes one sound different from another, is referred to as Timbre or Color. Tempo, Pizzicato, and Tremolo denote different musical concepts.
Step-by-step explanation:
In music theory, the term referring to the distinctive tone quality of a sound is Timbre, also known as Color. It is what makes a particular musical sound different from another, even when they have the same pitch and loudness. For example, it is the difference in sound between a guitar and piano playing the same note at the same volume. The terms Tempo, Pizzicato, and Tremolo refer to different aspects of music. Tempo refers to the speed of music, Pizzicato refers to a method of playing stringed instruments, and Tremolo is a fast reiteration of a single note or chord.
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