semicord

Bsus4 B suspended fourth chord

Notes
B E F#
Formula
1 4 5
Semitones
0 5 7 above the root
Other symbols
Bsus

B to E is a perfect fourth (5 semitones), E to F# is a major second (2 semitones). The third is replaced by the fourth (E), which wants to fall to the third. With E in the bass the same three keys read as Esus2.

Bsus4 on the piano

C4D4E4F4G4A4B4C5D5E5F5G5A5B5C#4Eb4F#4Ab4Bb4C#5Eb5F#5Ab5Bb5C4BC5EF#

Root position from B4: B4, E5, F#5. Middle C is C4.

Bsus4 on the guitar

Standard tuning (E A D G B E). Strings run low E on the left to high e on the right, frets downwards; × is a muted string, ○ an open string, and each dot shows the note it sounds, with the root in blue-green. Every shape below has B as its lowest note.

×BBF#F#BBEEF#F#
A-shape barre, root on the A string at fret 2
x 2 4 4 5 2 (low E to high e)
Sounds B2 F#3 B3 E4 F#4
7frBBF#F#BBEEF#F#BB
E-shape barre, root on the E string at fret 7
7 9 9 9 7 7 (low E to high e)
Sounds B2 F#3 B3 E4 F#4 B4

The barre shapes are movable: an E-shape chord's root is the note under your first finger on the low E string, an A-shape chord's root is the note on the A string. Slide the same grip up or down to play suspended fourth chords on other roots.

Inversions of Bsus4

An inversion puts a note other than the root in the bass. The name is what semicord's chord finder calls those notes played bottom to top; a slash name like C/E means a C chord with E in the bass.

PositionNotes, bass firstNamedListen
Root positionB E F#Bsus4
1st inversionE F# BEsus2 (also read as Bsus4/E)
2nd inversionF# B EF#7sus4 (also read as Bsus4/F#)

Where Bsus4 fits

A sus chord has no third, so it is neither major nor minor and has no fixed place in a key. Bsus4 usually resolves to B or Bm: the fourth, E, falls a half or whole step to the third. Its most common job is Vsus4 in E major, delaying the V chord: Bsus4 → B → E.