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C Major 7♯5

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The C Major 7♯5 chord contains the notes C, E, G♯, and B.

Notes: C, E, G♯, B · Piano keys: C E G♯ B

Reviewed for accuracy · Last updated July 2026 · Maintained by Justin Evans

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C
C – E – G♯ – B

Practice C Major 7♯5

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Introduction

The C Major 7♯5 chord is a four-note chord made up of C, E, G♯, and B.

Notes

Notes:C – E – G♯ – B

Key Signature

A chord has no key signature of its own, but the C Major 7♯5 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
IC Major (major)
DegreeNumeralChordQuality
1IC MajorMajor
2iiD MinorMinor
3iiiE MinorMinor
4IVF MajorMajor
5VG MajorMajor
6viA MinorMinor
7vii°B DiminishedDiminished

C Major 7♯5 — Frequently Asked Questions

What is the C Major 7♯5 chord on piano?
The C Major 7♯5 chord contains the notes C – E – G♯ – B. 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 reflects piano.org's own interval-derived dataset.

  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(1799)

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

    Public domain score
  4. 4

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