A Major ninth sharp fifth

The major ninth sharp fifth chord extends maj9 with an augmented fifth (1-3-♯5-7-9). It combines the wide brightness of the ninth with the restless lift of ♯5—less common than maj9(♯11), but useful in fusion and modern jazz when a major center needs altered-fifth shimmer without Lydian ♯11.

Construction

Think maj7(♯5) plus 9, or maj9 with a raised fifth.

Usage

Color hits, passing chords, and cinematic pads on major pedals.

Examples

• Fusion keyboard voicings
• Modern jazz reharmonizations
• Film scoring for luminous tension

Play

Balance ♯5 against 7 and 9; thin dense registers.

Ear-training cues

maj9-like openness with a widened fifth.