A13(#5) Guitar Chord - Guitar Chords Chart
What is in A13#5, the A thirteenth sharp five chord? The notes are A, C#, E#, G, B, D and F#.
E# is written that way to keep one letter name per chord tone, even though it sounds like F. The raised fifth E# and the thirteenth F# are a half step apart, a tight interval inside the chord, and the minor seventh G follows one half step higher.
To see where each of these intervals falls on the neck, work through intervals on the fretboard. The ninth is B and the natural eleventh is D.
A 13th with sharp 5th guitar chord is also written as A13(#5), A13#5 or A13+5.
A13#5 Chord Notes and Formula
Notes of the A 13(#5) chord:
Formula of the Dominant Thirteen Sharp Fifth chord:
Formula: 1 3 #5 b7 9 11 13
A13#5 Chord Interactive Fretboard
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More A Chords
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Created by
Giancarlo is a musician (teaching guitar since 2000), software engineer, AI consultant and published researcher
FAQ
What are the notes in A13#5?
A13#5 is spelled A, C#, E#, G, B, D and F#. It stacks a major third, sharp fifth, minor seventh, ninth, eleventh and thirteenth on A.
What does the #5 in A13#5 mean?
It is the fifth raised by a half step. The perfect fifth over A is E, so the sharp fifth is E#, which sounds like F.
Why does A13#5 use E# instead of F?
The fifth is named by letter, and from A it falls on E. Raising E by a half step gives E#, even though the pitch matches F.
What makes A13#5 an augmented chord?
The root, major third and sharp fifth, A, C# and E#, form an augmented triad. The G, B, D and F# stack on top of it to reach the thirteenth.
