The grip
One fixed hand shape. Learn it once and let the bass do the naming. The keyboard lights the four notes you hold; tap any bass note underneath — buttons, keys, or a MIDI keyboard — and hear the same motionless hand become a different chord.
Tap a bass note — the hand (D–E–G♯–B♭) never moves; the name does.
| Notes (close voicing) | D–E–G♯–B♭ |
|---|---|
| Parent scale | Whole-tone scale (C whole tone) |
| Symmetry | tritone (two pairs) |
| Readings | 4 functional, 4 total |
One hand, 4 chords: the readings
Every row below is the same four notes with a different bass underneath. The intervals are computed from that bass, so the chord name is arithmetic, not opinion. Three stars means every defining tone is present; two stars means one key tone is implied; a cross marks an avoid-note collision that no bass rescues.
| Bass | Intervals | Chord | Rating | Use |
|---|---|---|---|---|
| C | 9 · 3 · ♯5 · ♭7 | C9(♯5) | ★★★ | Whole-tone dominant. Tritone twin of G♭9(♯5). |
| G♭ | 9 · 3 · ♯5 · ♭7 | G♭9(♯5) | ★★★ | Tritone twin of C9(♯5), same chord, different bass. |
| E | R · 3 · ♭5 · ♭7 | E7(♭5) | ★★★ | Tritone twin of B♭7(♭5). |
| B♭ | R · 3 · ♭5 · ♭7 | B♭7(♭5) | ★★★ | Tritone twin of E7(♭5). |
Why the bass names the chord
The four notes are rootless: the root is never inside the shape. When a bass note lands beneath the grip, the intervals from that bass to each held note spell out a chord quality. Move the bass and the same physical hand becomes a new chord. Because this grip is symmetric under the tritone (two pairs), one shape serves an entire cycle of basses, which is why it carries so many names.
Frequently asked
What is the whole-tone grip?
The whole-tone grip is the four-note rootless voicing D–E–G♯–B♭, a subset of the Whole-tone scale (C whole tone). Four altered dominants, two tritone-twin pairs. The root is never inside the shape: the bass note supplies it and thereby names the chord.
What chords does the whole-tone grip spell?
4 functional readings come from the one shape: C9(♯5) (over C), G♭9(♯5) (over G♭), E7(♭5) (over E), B♭7(♭5) (over B♭). Each is produced by placing a different bass note under the same fixed hand.
Why does one hand shape have several names?
A chord name is a relationship between the notes and a bass. The grip is symmetric under the tritone (two pairs), so a single shape reuses across an entire cycle of basses, which is why it carries so many names at no extra memory cost.
What is the strongest reading of the whole-tone grip?
With C in the bass the grip is C9(♯5): intervals 9 · 3 · ♯5 · ♭7. Whole-tone dominant. Tritone twin of G♭9(♯5).