Table of Contents
Augmented major seventh chords are distinctive and expressive chords used in various musical genres. They combine the tension of an augmented triad with the richness of a major seventh. Learning how to build and recognize these chords on piano and guitar can enhance your harmonic vocabulary and improvisation skills.
Understanding the Structure of Augmented Major Seventh Chords
An augmented major seventh chord consists of three notes: the root, the augmented fifth, and the major seventh. The structure can be summarized as:
- Root
- Augmented Fifth (#5)
- Major Seventh (7)
This creates a chord with a tense and colorful sound, often described as “dreamy” or “mysterious.”
How to Build Augmented Major Seventh Chords
On Piano
To build an augmented major seventh chord on piano:
- Start with the root note.
- Count up a major third (4 semitones) to find the second note.
- Add an augmented fifth by counting 8 semitones from the root.
- Finally, add the major seventh, which is 11 semitones from the root.
For example, a C augmented major seventh (C+maj7) consists of:
- C (root)
- E (major third)
- G# (augmented fifth)
- B (major seventh)
On Guitar
To build the chord on guitar, find the notes on the fretboard:
- Identify the root note on a string.
- Locate the augmented fifth (e.g., G# over C).
- Include the major seventh (e.g., B over C).
- Play these notes simultaneously or in a voicing that emphasizes their relationship.
Recognizing Augmented Major Seventh Chords
Recognition involves identifying the unique intervals and sound of the chord within a progression. Key features include:
- The presence of an augmented fifth, which sounds dissonant and tense.
- The major seventh interval, which adds a lush quality.
- The overall sound is often bright, mysterious, or unresolved.
Listening Tips
Practice listening for the combination of the augmented fifth and major seventh. Play the chord on your instrument and compare it to other similar chords, such as major seventh or augmented triads, to develop your ear.
Common Uses in Music
Augmented major seventh chords are often used in jazz, fusion, and film music to create tension or a dreamlike atmosphere. They can serve as passing chords or as part of a larger harmonic progression.
Summary
Building and recognizing augmented major seventh chords involves understanding their structure and intervals. On piano, focus on the note relationships, and on guitar, practice voicings that highlight the chord tones. With practice, these chords will become a versatile tool in your musical arsenal, adding color and complexity to your playing.