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Chord · Reference entry

C♯ Major 6

Major 6 · C♯ – E♯ – G♯ – A♯ · intervals 1-3-5-6

The C♯ Major 6 chord (C♯6) contains the notes C♯, E♯, G♯, and A♯. Its interval formula is Root - Major 3rd - Perfect 5th - Major 6th. A major triad plus the 6th — softer and jazzier than a plain triad, common in ballads and standards.

D♭ Major 6
This is the same chord as D♭ Major 6 — the same keys on the keyboard, spelled with flats.

At the keyboard

C# · E# · G# · A#
Flashcards · Chord
Three questions on C♯ Major 6
Answer on the keyboard, not with buttons. No login required.
C♯6

The C♯ Major 6 chord is a four-note chord made up of C♯, E♯, G♯, and A♯.

Construction

C♯ Major 6 = Root + Major 3rd + Perfect 5th + Major 6th = C♯ · E♯ · G♯ · A♯
NoteIntervalDegree
C♯Root1
E♯Major 3rd3
G♯Perfect 5th5
A♯Major 6th6

C♯ Major 6 Inversions

C# Major 6 piano chord, 1st inversion — E♯, G♯, A♯, C♯
The C# Major 6 chord, 1st inversion, on a piano keyboard.
C# Major 6 piano chord, 2nd inversion — G♯, A♯, C♯, E♯
The C# Major 6 chord, 2nd inversion, on a piano keyboard.
C# Major 6 piano chord, 3rd inversion — A♯, C♯, E♯, G♯
The C# Major 6 chord, 3rd inversion, on a piano keyboard.
PositionNotes
Root PositionC♯ – E♯ – G♯ – A♯
1st InversionF – G♯ – A♯ – C♯
2nd InversionG♯ – A♯ – C♯ – F
3rd InversionA♯ – C♯ – F – G♯

Key Signature

A chord has no key signature of its own, but the C♯ Major 6 is the tonic (I) chord of C# Major, whose key signature has 7 sharps (F♯, C♯, G♯, D♯, A♯, E♯, B♯).

F♯C♯G♯D♯A♯E♯B♯

Order of sharps

Sharps are added to a key signature in a fixed order. Each new sharp key adds the next sharp on the list.

FCGDAEB

Mnemonic: Father Charles Goes Down And Ends Battle

Chords in the Key of C♯ Major

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

C1C2C3C4E♯C5C6C7C8C♯G♯
IC♯ Major (major)
DegreeNumeralChordQuality
1IC♯ MajorMajor
2iiD♯ MinorMinor
3iiiF MinorMinor
4IVF♯ MajorMajor
5VG♯ MajorMajor
6viA♯ MinorMinor
7vii°C DiminishedDiminished

Same Notes, Other Names

The notes C♯ – E♯ – G♯ – A♯ aren’t exclusive to this chord. Depending on which note is the bass and how the chord functions, the same pitches also spell:

C♯ Major 6 — Frequently Asked Questions

What is the C♯ Major 6 chord on piano?
The C♯ Major 6 chord contains the notes C♯ – E♯ – G♯ – A♯. On piano, play these notes together to sound the chord.
What notes are in the C# Major 6 chord?
C# Major 6 is built from the C# root. Check the interactive keyboard above for exact notes and fingering.
How is the C# Major 6 chord used in music?
C# Major 6 appears in jazz, pop, and classical contexts. Its sound depends on the chord quality (Major 6).
What is the fingering for C# Major 6?
See the fingering chart above. Right hand typically uses thumb on root. Left hand uses pinky on root.
What are the inversions of C# Major 6?
Use the inversion buttons above to see each inversion with notes, fingering, and staff notation.
Can I substitute C# Major 6 for C# Major?
Yes — the sixth adds warmth for a vintage jazz sound.

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

    Goetschius, Percy(1889)

    The Material Used in Musical Composition

    Public domain treatise
  2. 2

    Riemann, Hugo(1896)

    Harmony Simplified (English translation)

    Public domain treatise
  3. 3

    Beethoven, Ludwig van(1802)

    Piano Sonata No. 14 in C♯ minor, Op. 27 No. 2 ("Moonlight"), i

    Public domain score
  4. 4

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