sus_chords: Creating Tension and Motion

Introduction

__MUSICXML_BLOCK_0__ sus_chords are a powerful tool for adding intrigue and forward momentum to your music. By replacing a chord’s defining third with a different note, they create a captivating sense of ambiguity and anticipation. Found everywhere from folk ballads to rock anthems and jazz progressions, mastering “sus” chords will significantly expand your harmonic vocabulary and expressive range.

Main Concept

A sus_chord alters the basic formula of a major or minor triad. In a standard triad, the third (either major or minor) determines the chord’s emotional quality. A sus_chord intentionally removes this third, creating a sound that is neither clearly major nor minor. This harmonic ambiguity generates tension, a feeling that naturally seeks resolution and propels the music forward.

There are two primary types:
* Sus4 Chord: This replaces the third with the perfect fourth above the root (formula: Root - 4 - 5). It produces a strong, directional tension that typically wants to resolve downward to the third.
* Sus2 Chord: This replaces the third with the major second above the root (formula: Root - 2 - 5). It creates a more open, contemporary, and atmospheric sound, with a gentler sense of ambiguity than the sus4.

The core principle is tension and release. The suspended note creates instability, and its resolution to the expected third provides a satisfying sense of completion and motion.

Examples

1. Basic Resolution in a Key:
   A classic progression is D - Dsus4 - D. The Dsus4 chord (notes D, G, A) introduces tension with the G, which then resolves smoothly down to the F# in the final D major chord (D, F#, A). This is a staple in folk and pop music.

2. Using Sus2 for Atmosphere:
   A Csus2 chord (notes C, D, G) has a spacious, modern quality. It can be used as a stable, shimmering tonic chord itself, or it can resolve to C major (C, E, G). You might hear this open sound in the introspective music of composers like Erik Satie or in ambient film scores.

3. The Jazz “Sus” Dominant:
   In jazz, a dominant 7th chord is often given a suspended quality, notated as something like G7sus4. This chord (typically voiced as G, C, F, A) delays the expected major third (B) and creates intense harmonic pressure that resolves powerfully to the tonic chord (like C major). Miles Davis’s “So What” vamp is a famous example built on this suspended sound.

Practical Summary

• Sus chords create tension by replacing a triad’s third with either a 2nd (sus2) or 4th (sus4).
• The sus4 has a stronger pull to resolve downward to the third.
• The sus2 offers a more open, stable color but can still resolve to the third for motion.
• Apply them by substituting a major or minor chord with its suspended version, then resolving back to the original chord. Experiment by placing them before a chord change to heighten anticipation.
• Listen for the feeling of “yearning” or “lift" they provide, and use them to add sophistication and emotional depth to your progressions.