The most common ders are treble (high) and bass (low) O A True B. False

A) True

Explanation:

Treble clef and bass clef are the most used in music. A clef is a musical symbol used to indicate which notes are represented by the lines and spaces on a musical stave. When a clef is placed on a stave it assigns a particular note to one of the five lines. This line becomes a reference point by which the names of the other notes on the stave are determined.

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