What is a musical scale?

• A. A single pitch played repeatedly
• B. A sequence of notes ordered by pitch within an octave
• C. A rhythm pattern of accented notes
• D. A set of chords used in a key

Answer: (B)

A musical scale is a sequence of pitches arranged in ascending or descending order, typically spanning one octave, that singers and players use as the set of notes for melodies and harmonies. This is why the best answer describes a scale as an ordered sequence of notes by pitch within an octave. It isn’t just a single pitch, which would be a tone; it isn’t a rhythm pattern, which concerns timing and accents; and it isn’t a set of chords, which relates to harmony. For example, the C major scale moves through the notes C-D-E-F-G-A-B-C in one octave, providing the tonal framework for melodies built from those pitches.