Melody Meets Harmony: Chord Tones and Tensions

The idea

Every melody note is one of two things:

• a chord tone, the 1, 3, 5 or 7 of the chord sounding at that moment. Chord tones are stable and can be held.
• a non-chord tone, a tension that normally resolves by step to a chord tone.

The common non-chord tones:

Type	What it does
Passing tone	Fills the step between two chord tones
Neighbor tone	Steps away from a chord tone and comes straight back
Suspension	A note held over from the previous chord that resolves down late
Appoggiatura	A tension played on the strong beat that resolves by step. The “leaning” note of ballads.
Anticipation	Arrives at the next chord’s note early

Practical laws:

1. Land long and accented notes on chord tones. The 3rd and the 7th are the color notes. The root is plain to sing and the 5th is neutral.
2. Use non-chord tones between them for motion. A melody of chord tones only sounds like an arpeggio exercise. A melody of tensions only sounds wrong.
3. When the chord changes, your note changes meaning. Hold a G over C, Am, F and G: it is the 5th, then the 7th, then the 9th, then the root. Keeping one melody note over changing chords is a top-shelf pop trick. Many hit choruses sit on one or two notes while the harmony moves underneath.
4. The hook lives at the intersection: a distinctive rhythm, strong chord-tone targets, and one surprising tension.

Loop this progression and try each law:

On your instrument

Know your targets. For the loop above:

Chord	C	Am	F	G
Root	C	A	F	G
3rd	E	C	A	B
5th	G	E	C	D

On guitar, the easiest way to see chord tones is to keep the three-string triads from Module 3 under your fingers and play melodies around them. On piano, hold the chord in the left hand and pick melody notes with the right: you can see which keys belong to the chord.

The one-note test. Sing or play G through all four chords. Then E. Then C. Each one colors the progression differently, and each one “disagrees” with a different chord. That mild disagreement is expressive, and it resolves by itself when the chord changes.

Worked example

A two-bar melody over C and Am, analyzed note by note:

Beat	Note	Chord	Role
1	E	C	Chord tone (3rd), long
2 &	F	C	Passing tone
3	G	C	Chord tone (5th)
4	A	C	Anticipation of the next chord’s root
1	A	Am	Chord tone (root)
2	B	Am	Neighbor tone
3	C	Am	Chord tone (3rd), long

The strong beats carry E, G, A and C: all chord tones, mostly 3rds. The motion between them comes from three non-chord tones. This balance, chord tones on strong beats and tensions on weak ones, is the default for singable melodies.

Exercises

1. Loop C – Am – F – G. Sing or play a melody using only chord tones. Then add one passing tone per bar. Then rewrite it so that one single note (try G) is held across all four chords, and listen to its color shift.
2. Take your best progression from Module 4. Write two melodies: one starting on the 3rd of the first chord, one starting on the 5th. Note which feels stronger and why.
3. Guitar: improvise over the loop targeting the 3rd of each chord on beat 1. This is what “playing the changes” means. Lesson 6.4 builds on it.
4. Take a melody you already wrote. Circle every note on a strong beat and check whether it is a chord tone. Change one that is not, and one that is. Compare.

Common mistakes

• Choosing notes from the scale without looking at the chord. Every note of C major is “right” over C – Am – F – G, and half of them will sound weak on any given beat.
• Resolving every tension immediately. Let an appoggiatura lean for a full beat before it resolves. The delay is the emotion.
• Singing the root all the time. If your melody keeps landing on the root of each chord, it is doubling the bass line.