Questions: Melody from Harmony

Question 1

A melody moves C–D–E over a sustained C major chord (C–E–G). The note D is:

• A. A chord tone of the C major triad — D is in the key of C major, so it belongs to the chord.
• B. A passing tone — a non-chord tone filling the stepwise gap between the chord tones C and E.
• C. An error — D should not appear over a C major chord in tonal music.
• D. The chord seventh, making this a Cmaj7 harmony.

Answer: (B)

D is not part of the C major triad (C–E–G), so it is a non-chord tone. It moves by step between the chord tones C and E, making it a passing tone — the most common type of non-chord tone. The confusion in option A arises from conflating being in the key with belonging to the chord: D is diatonic to C major, but the triad sounding at this moment consists only of C, E, and G.

Question 2

A student composing a melody places the note C on a strong downbeat over a G major chord (G–B–D). This choice:

• A. Is perfectly fine — melodies are independent of the underlying harmony.
• B. Is fine because any note diatonic to the key fits any chord within that key.
• C. Is problematic — C is a non-chord tone, and placing it on a strong beat without immediate stepwise resolution creates awkward dissonance that undermines harmonic clarity.
• D. Automatically resolves because the next chord will accommodate C.

Answer: (C)

C is not a member of the G major triad (G–B–D), so it is a non-chord tone. Non-chord tones are most effective on weak beats or weak parts of beats, resolving by step to a chord tone. Placing a non-chord tone on a strong downbeat without preparing and resolving it carefully creates unwanted dissonance that obscures the harmony. This is the practical application of the scaffold model: strong beats should be anchored by chord tones.

Question 3

Chord tones are the most stable melodic resting points over a given harmony — they are the pitches that belong to the current chord, and melodies typically emphasize them on strong beats.

• T. True
• F. False

Answer: True

This is the central architectural principle of tonal melody writing. Chord tones (root, third, fifth — and seventh in seventh chords) are the pitches that sound consonant with the underlying harmony without requiring resolution. Placing them on strong metric positions (downbeats, beat 1, beat 3 in 4/4) establishes harmonic clarity. Non-chord tones, by contrast, introduce tension and must be handled with care — typically on weaker positions with stepwise departure and return.

Question 4

Because non-chord tones don't belong to the underlying harmony, skilled composers avoid them and write melodies consisting almost largely of chord tones.

• T. True
• F. False

Answer: False

Quite the opposite: non-chord tones are essential to virtually all expressive tonal melody. A melody consisting only of chord tones sounds mechanical and static — like arpeggios. Non-chord tones (passing tones, neighbor tones, suspensions, etc.) add motion, direction, tension, and melodic interest between the stable chord-tone anchors. Skilled composers use them deliberately, placing them on weak beats with stepwise resolution so they enrich rather than destabilize the harmony.

Question 5

Explain the difference between a chord tone and a non-chord tone, and describe how non-chord tones are typically handled so they don't undermine the harmonic framework.

Model answer: A chord tone is a pitch that is part of the currently sounding harmony (root, third, fifth, or seventh of the chord). A non-chord tone is any melody pitch that falls outside the current chord. Non-chord tones are managed through two conventions: metric placement (weak beats or weak parts of beats) and stepwise motion (they typically arrive by step and leave by step, resolving to a nearby chord tone). This ensures they are heard as momentary tensions within the harmonic framework rather than as contradictions of it.

The passing tone (filling a step gap between two chord tones), neighbor tone (stepping away from a chord tone and immediately returning), and suspension (holding over a pitch from the previous chord before resolving) are all defined by this combination of metric subordination and stepwise resolution. When you hear an unstable note in a melody, you are hearing a non-chord tone; when it resolves, the harmonic framework reasserts itself.