Certification Board for Music Therapists (CBMT) Practice Exam

Which of the following diatonic chord progressions best fits a given melody?

1. C, Am, D7, G

2. Em, D, F, C

3. C, F#m, Dm7, G

4. Am, F, D7, C

The correct answer is: C, Am, D7, G

The chosen answer is appropriate because the chord progression C, Am, D7, G features chords that are primarily rooted in the key of C major, which is likely to align nicely with a melody also based in that key. The progression starts on the tonic chord, moves to the relative minor (Am), introduces a dominant seventh chord (D7), which creates a strong resolution to the dominant (G), and ultimately emphasizes the return to the tonic (C). This sequence of chords provides a strong harmonic foundation that can enhance the melodic lines, contributing to a sense of movement and resolution as the melody unfolds. The relationship between the chords and the melody is essential in diatonic progressions—the aim is to ensure that the chords not only support the melody but also create a pleasing musical narrative. While other options present various chord progressions, they might not maintain the same clarity or resonance within the context of a melody rooted in C major. For example, Em, D, F, C introduces chords that are outside of the standard diatonic triads in C major, while C, F#m, Dm7, G involves a non-diatonic chord (F#m) that may disrupt the expected harmonic function, and Am, F, D