Cmaj7♯5: C Major 7th Sharp 5th Piano Chord

Construction

C Major 7♯5 = Root + Major 3rd + Minor 6th + Major 7th = C, E, G♯, B

Note	Interval	Degree
C	Root	1
E	Major 3rd	3
G♯	Minor 6th	♯5
B	Major 7th	7

Fingering

Note	Key color	Right hand	Left hand
C	white	thumb (1)	little finger (5)
E	white	index finger (2)	middle finger (3)
G♯	black	middle finger (3)	index finger (2)
B	white	little finger (5)	thumb (1)

Right hand: thumb (1) on C, index finger (2) on E, middle finger (3) on G♯, little finger (5) on B.

Left hand: little finger (5) on C, middle finger (3) on E, index finger (2) on G♯, thumb (1) on 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 C Major:

I — C Major (major)

Degree	Numeral	Chord	Quality
1	I	C Major	Major
2	ii	D Minor	Minor
3	iii	E Minor	Minor
4	IV	F Major	Major
5	V	G Major	Major
6	vi	A Minor	Minor
7	vii°	B Diminished	Diminished

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.