Answer:
Dynamics – loud or soft. A composition that has extremely soft passages as well as extremely loud passages is said to have a large or wide dynamic range. Dynamics can change suddenly or gradually (crescendo, getting louder, or decrescendo, getting softer.)
Timbre – sound quality or tone color; timbre is the characteristic that allows us to distinguish between one instrument and another, and the difference between vowel sounds (for example, long "a" or "ee"). Terms we might use to describe timbre: bright, dark, brassy, reedy, harsh, noisy, thin, buzzy, pure, raspy, shrill, mellow, strained. I prefer to avoid describing timbre in emotional terms (excited, angry, happy, sad, etc.); that is not the sound quality, it is its effect or interpretation. Rather than describe the timbre of an instrument in other terms, it is often more clear just to describe the timbre by naming the instrument, once we have learned the names and sounds of a few instruments.
Tempo - means the speed at which a piece of music should be played. As with many other musical terms, Italian words are used to describe different tempos of music.
