root, major third, sharp fifth
The fifth is raised instead of lowered, which stretches the triad rather than compressing it. Like the diminished seventh it is symmetrical — three equal major thirds — so one shape serves three roots. It rarely stands still: most often it is a passing chord between a major triad and its sixth.
12 chords here, 1 symbol across 12 roots.
On all 12 roots.
Every chord on the site, grouped by root instead, is on the full index. Where the shapes and the theory come from is on the about page.
Shows each chord the way this style would voice it, and marks which of its alternatives belong to the idiom.