C augmented piano chord (Caug)

An augmented chord stacks two major thirds, with an augmented fifth. Strange and floating, it often works as a transition between two chords.

On the keyboard

Chord notes

NoteInterval
Croot
Emajor third
G♯ (G sharp)augmented fifth

Formula: 1 – 3 – #5 · C – E – G♯

A progression with this chord

  1. CI
  2. CaugI+
  3. FIV

The augmented chord connects the major chord to the chord built on the fourth.

Other C chords

The same chord on other roots