B Dominant thirteenth flat ninth sharp eleventh

The 13♭9♯11 dominant combines two opposite upper colors: the dark compression of ♭9 and the bright lift of ♯11. Together with 13, this creates a dominant chord that is tense, colorful, and highly directional. It is an advanced sonority used when standard dominant colors feel too neutral.

Construction

A practical formula is 1-3-5-♭7-♭9-♯11-13. In C, one representative set is C-E-G-B♭-D♭-F♯-A. In voicings, 3 and ♭7 define function while ♭9/♯11/13 are selected for color balance.

Usage

Use it in modern jazz, fusion, and cinematic writing for high-intensity dominant moments. It works especially well before clear arrivals, where contrasting dark and bright tensions heighten expectation.

Examples

• Climactic altered V before tonic resolution
• Fusion turnarounds with mixed upper alterations
• Film cue tension peaks before harmonic release

Play

Keep 3 and ♭7 stable, then separate ♭9 and ♯11 by register so each remains audible. If the voicing becomes crowded, remove less essential inner tones before dropping the signature tensions.

Ear-training cues

Hear ♭9 as inward pressure and ♯11 as upward brightness. The coexistence of both is the chord's fingerprint.