Chord · Piano
C♯ Augmented Chord · Piano
Interactive keyboard
Highlighted notes form this chord.
Notes
C♯ · E♯ · G𝄪
Root: C♯
Intervals
1 · 3 · ♯5
How it is built
This chord starts on C♯ and applies the intervals 1, 3, ♯5. The result contains 3 distinct pitch classes per octave.
Explore related combinations
Guide and musical context
About C♯ Augmented Piano Chord
C♯ Augmented Piano chord contains C♯, E♯, G𝄪. Its sound is bright, unstable and ambiguous because of its augmented fifth.
Character and sound
Bright, unstable and ambiguous because of its augmented fifth.
Musical context and history
The augmented triad stacks two major thirds and forms a symmetrical structure. It has long served as a chromatic alteration of major harmony and a voice-leading device.
How and where it is used
It works as a transition chord, incomplete altered dominant or dramatic color in pop, jazz and screen music.
On piano, the notes can be distributed between both hands and across different octaves. The interactive keyboard makes it easy to verify pitches and experiment with inversions or registers without changing the harmony. Everything you see and hear on this page comes from the same note set shown above.
Harmonic and musical relationships
Compare this chord with other variants sharing the root C♯. Changing a single third, fifth, seventh or extension makes it easy to hear which interval defines the chord’s character.
The formula on this page is 1 · 3 · ♯5 and, from C♯, produces the notes C♯ · E♯ · G𝄪.
Frequently asked questions
What notes are in the C♯ Augmented Piano chord?
The notes are C♯, E♯, G𝄪.
What is its interval formula?
The formula is 1 · 3 · ♯5.
How does it sound and what is it used for?
Bright, unstable and ambiguous because of its augmented fifth. It works as a transition chord, incomplete altered dominant or dramatic color in pop, jazz and screen music.
How can I check it on Piano?
Use the interactive diagram on this page and press Play or Note by note. The highlighted positions, written notes and playback all use the same pitch collection.