Which element is described by words such as bright, dark, and mellow?
a.
timbre
b. key
pitch
d.
beat

A. Timbre

Explanation: Timbre is the characteristic of a sound or melody, so it can be described as bright, dark or mellow. Keys are more strict concepts: there are only minor and major keys. Pitch also has precise requirements. Beat is the rhythm of a song or melody, and cannot be described by words.

wait i don't understand this, but my guess is that this is a trick question.