Chord Information
Learn how to play Aaug on piano
Notes in Chord
Intervals
Inversion
Notes (bottom to top): A4 - C#5 - F5
Right Hand Fingering
3=middle, 4=ring, 5=pinky
Interactive Piano
Click the highlighted keys to play the Aaug chord
About the Aaug Chord
The A augmented chord builds an expansive, yearning sound from the warm A root. Comprising A-C#-E#(F), this chord stretches A major's already bright quality further, creating floating tension that seeks resolution. The raised fifth (E#/F) adds a distinctive color that's both familiar and strange.
A augmented is symmetrically related to C# augmented and F augmented—all three share the same pitches. This makes A+ useful for connecting A, C#/Db, and F key areas. The chord's warmth from the A root makes it more approachable than some augmented chords.
On piano, A+ has a comfortable shape: A on white, C# on black, and F on white. This accessible pattern teaches the augmented chord's characteristic spacing.
Music Theory & Usage
A augmented often appears as an altered dominant in D major (A+ instead of A or A7) or as a chromatic passing chord. Moving from A to A+ to D creates voice leading where F rises to F#. It also functions in whole-tone contexts.
Jazz musicians use A+ in altered dominant voicings moving to D. Classical composers employed it for romantic, yearning passages. Pop and rock occasionally feature it for emotional, floating moments.
Famous Songs Using Aaug
Hear how professional musicians use the Aaug chord in these well-known songs:
“Baby I Love Your Way”
by Peter Frampton
Uses chromatic harmony including augmented chord movement
“Penny Lane”
by The Beatles
Sophisticated arrangement with chromatic chord colors
“Tristan und Isolde Prelude”
by Richard Wagner
The famous "Tristan chord" relates to augmented harmony
“A Day in the Life”
by The Beatles
Groundbreaking arrangement uses chromatic, augmented harmony
How to Play Aaug on Piano
- Place your thumb on A.
- Place your middle finger on C#.
- Place your pinky finger on F.
- Press all keys simultaneously to hear the Aaug chord.
Recommended fingering: 1-3-5 (right hand)
Aaug Chord Inversions
The Aaug chord can be played in different inversions:
Root Position
A - C# - F (bass note: A)
First Inversion
C# - F - A (bass note: C#)
Second Inversion
F - A - C# (bass note: F)
Common Chord Progressions Using Aaug
I-IV-V Progression
Common chord progression
I-V-vi-IV Progression
Common chord progression
Practice Tips for Aaug
- Start slowly and focus on pressing all keys simultaneously for a clean sound.
- Practice transitioning between Aaug and other common chords to build muscle memory.
- This is a fundamental chord - master it in all inversions before moving to complex chords.
- Try playing Aaug as part of simple progressions to understand its harmonic function.
Frequently Asked Questions about Aaug
Is the fifth of A augmented E# or F?
Both refer to the same pitch. E# is theoretically correct in A major context (A-C#-E#), while F is the simpler enharmonic name. In practice, most think of it as F. Use E# in academic contexts, F for practical purposes.
What is the fingering for A augmented?
For right hand, use 1-3-5 (thumb on A, middle on C#, pinky on F). For left hand, use 5-3-1. The C# black key falls naturally under the middle finger. This shape is comfortable and intuitive.
What chords does A augmented resolve to?
A+ commonly resolves to D major (F moves to F#), to A major (F moves down to E), or to Dm (F stays while other voices adjust). The raised fifth typically moves by half step.
How is A augmented related to F augmented?
A+ (A-C#-F), C#+ (C#-F-A), and F+ (F-A-C#) all contain the same three pitches, just in different arrangements. This symmetry allows any of them to pivot between A, C#/Db, and F key areas.