Seventh Piano Chords

Seventh chords add a fourth note above the triad. Dominant 7ths drive tension toward resolution, minor 7ths sound smooth and jazzy, and major 7ths glow with a dreamy major color.

Chord formulas in this category

TypeFormulaExplorer
Dominant 7th1 – 3 – 5 – b7Open in Explorer
Minor 7th1 – b3 – 5 – b7Open in Explorer
Major 7th1 – 3 – 5 – 7Open in Explorer

Formulas use the shared chord-theory registry (7, m7, maj7). Notes on each chord page are generated from that same source of truth.

Example chords

Browse All Seventh Chords

Every seventh chord page in the library, organized by type.

Practice and explore

Frequently asked questions

What is a dominant seventh chord?
A dominant seventh (written C7, G7, etc.) is a major triad plus a minor seventh. It strongly wants to resolve to the tonic — such as G7 to C.
How is maj7 different from m7?
maj7 adds a major seventh above a major triad (C – E – G – B). m7 adds a minor seventh above a minor triad (D – F – A – C).

Browse all qualities: Dominant 7th, Minor 7th, Major 7th.