Dom7, maj7, min7 chords

Three Core Seventh-Chord Colors

Three common seventh-chord colors tell you how stable or tense a chord feels. The suffix tells you which third and seventh are inside the chord.

Color	Example	Plain-language meaning	Listen for
Major seventh	Cmaj7	Major triad with a natural seventh	Settled, glossy color
Dominant seventh	C7	Major triad with a lowered seventh	Pull toward another chord
Minor seventh	Cm7	Minor triad with a lowered seventh	Darker, relaxed color

The plain 7 suffix is called a dominant seventh because it often creates the strongest pull toward the next chord.

The smallest changes are usually the 3rd and 7th, often called guide tones. Track those two notes instead of treating every four-note chord as a new shape.

Remember: maj7 feels like home, plain 7 creates motion, and m7 softens the chord.

Three Seventh-Chord Colors on C

Compare Cmaj7, C7, and Cm7 on the same root.

Keep your attention on the 3rd and 7th. Those two notes explain why one chord feels settled, one pulls forward, and one darkens.

Cycle Through Seventh-Chord Qualities

• Name each chord quality before you play it
• Compare the color difference between maj7 and 7 on the same root
• Compare the color difference between 7 and m7 on the same root
• Treat m7b5 as the most unstable sound in the set