Dominant 7 on Piano

What do dominant 7 sound like?

Restless and bluesy. The tritone between the 3rd and the ♭7 makes a dominant 7 lean forward — it is the engine chord of tonal music.

How are they built?

A major triad plus a minor 7th: root, major 3rd, perfect 5th, minor 7th. Major bottom, flat top — that mismatch is the tension.

What is their job in a progression?

THE dominant function: V7 pulls to I harder than anything else in harmony. G7 barely exists on its own — it exists to land on C.

Where you'll hear them

All of blues (where even the tonic is a 7th chord), jazz turnarounds, gospel, and the last chord before every big pop chorus resolution.

The beginner mistake

Resolving nothing. The ♭7 wants to fall a half step and the 3rd wants to rise — voice-lead those two notes and the progression plays itself.

Fingering logic

Four notes in a row of thirds: 1-2-3-5 for most roots, 1-2-4-5 when the 7th sits awkwardly under the pinky. Keep the thumb heavy — the root carries the chord.

Neighboring families