Bmaj9♯11: B Major 9th Sharp 11th Piano Chord

Construction

B Major 9♯11 = Root + Major 3rd + Perfect 5th + Major 7th + Major 2nd + Diminished 5th = B, D♯, F♯, A♯, C♯, E♯

Note	Interval	Degree
B	Root	1
D♯	Major 3rd	3
F♯	Perfect 5th	5
A♯	Major 7th	7
C♯	Major 2nd	9
E♯	Diminished 5th	♭5

Key Signature

A chord has no key signature of its own, but the B Major 9♯11 is the tonic (I) chord of B Major, whose key signature has 5 sharps (F♯, C♯, G♯, D♯, A♯).

F♯C♯G♯D♯A♯

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.

F♯C♯G♯D♯A♯E♯B♯

Mnemonic: Father Charles Goes Down And Ends Battle

Chords in the Key of B Major

These are the triads built on each degree of B Major:

I — B Major (major)

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

B Major 9♯11 : Frequently Asked Questions

What is the B Major 9♯11 chord on piano?

The B Major 9♯11 chord contains the notes B – D♯ – F♯ – A♯ – C♯ – E♯. On piano, play these notes together to sound the chord.