semicord

Eb5 Eb power chord

Notes
Eb Bb
Formula
1 5
Semitones
0 7 above the root
Also written
D#5 (D# A#)
Other symbols
Eb(no3)

Eb to Bb is a perfect fifth (7 semitones). Only two notes, the root and the fifth Bb, seven semitones apart. With no third it is neither major nor minor. On guitar the root is usually doubled an octave up, as in the shapes below. Turned upside down, Bb below Eb is a perfect fourth and the chord finder names it Bb + Eb.

Eb5 on the piano

C4D4E4F4G4A4B4C5D5E5F5G5A5B5C#4Eb4F#4Ab4Bb4C#5Eb5F#5Ab5Bb5C4EbBbC5

Root position from Eb4: Eb4, Bb4. Middle C is C4.

Eb5 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 Eb as its lowest note.

6fr×EbEbBbBbEbEb××
A-shape, root on the A string at fret 6
x 6 8 8 x x (low E to high e)
Sounds Eb3 Bb3 Eb4
11frEbEbBbBbEbEb×××
E-shape, root on the E string at fret 11
11 13 13 x x x (low E to high e)
Sounds Eb3 Bb3 Eb4

The E-shape and A-shape grips 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 power chords on other roots.

Inversions of Eb5

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 positionEb BbEb5
1st inversionBb EbBb + Eb (also read as Eb5/Bb)

Where Eb5 fits

A power chord has no third, so it belongs to any key where its root and fifth do and can stand for either Eb or Ebm. That ambiguity, and the fact that a bare fifth stays clear under heavy distortion where a third would turn muddy, is why rock and metal riffs are built from power chords.