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Chord · Reference entry

C Add 4

Add 4 · C – E – F – G

chord·/chords/add-4th/c/

The C Add 4 chord contains the notes C, E, F, and G.

Notes: C, E, F, G · Piano keys: C E F G

By Justin Evans · Pianist
Maintained for accuracy · Last updated July 2026 · How we review

At the keyboard

C · E · F · G
Flashcards · Chord
Three questions on C Add 4
Answer on the keyboard, not with buttons. No login required.
C

The C Add 4 chord is a four-note chord made up of C, E, F, and G.

Construction

C Add 4 = Root + Major 3rd + Perfect 4th + Perfect 5th = C · E · F · G
NoteIntervalDegree
CRoot1
EMajor 3rd3
FPerfect 4th4
GPerfect 5th5

Key Signature

A chord has no key signature of its own, but the C Add 4 is the tonic (I) chord of C Major, whose key signature has no sharps or flats.

Chords in the Key of C Major

These are the triads built on each degree of the C major scale:

C1C2C3CEGC5C6C7C8
I — C Major (major)
DegreeNumeralChordQuality
1IC MajorMajor
2iiD MinorMinor
3iiiE MinorMinor
4IVF MajorMajor
5VG MajorMajor
6viA MinorMinor
7vii°B DiminishedDiminished

C Add 4 — Frequently Asked Questions

What is the C Add 4 chord on piano?
The C Add 4 chord contains the notes C – E – F – G. On piano, play these notes together to sound the chord.

Related Tools

Chord FinderLook up any chord — see the notes, hear it, and play along.Chord DrillTimed drills to build speed and recognition across all chord types.Practice RoomPlug in a MIDI keyboard and get real-time feedback on every chord and scale.Circle of FifthsVisualize key relationships, relative minors, and key signatures.MIDI MonitorLive MIDI message stream with note names, velocity, and a scrolling staff.

References & Further Reading

The note names, intervals, fingering, and harmony on this chord page are grounded in the following sources. Public domain treatises and scores are linked to their full text; primary data is piano.org's own interval-derived reference dataset — continuously maintained and human-verified, with no fixed publication date.

  1. 1

    Prout, Ebenezer(1889)

    Harmony: Its Theory and Practice

    Public domain treatise
  2. 2

    Goetschius, Percy(1889)

    The Material Used in Musical Composition

    Public domain treatise
  3. 3

    Beethoven, Ludwig van(1799)

    Piano Sonata No. 8 in C minor, Op. 13 ("Pathétique")

    Public domain score
  4. 4

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Entry reviewed and maintained by Justin Evans. Corrections are read and applied.Report an error

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