A collection of pitches arranged in ascending or descending order is called a scale.
What is a scale?
A scale can be described as the any set of musical notes which is been ordered as a result of the fundamental frequency or pitch.
It should be noted that a A scale that is been ordered as a result of the increasing pitch is an ascending scale, and the one following the decreasing pitch is a descending scale., hence collection of pitches arranged in ascending or descending order is called a scale.
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