Map it slowly
Locate D, F♭ on white keys and G♭, B♭ on black keys. Try each hand separately before playing together; choose a fingering that keeps the wrist relaxed, without stretching between notes.
Arpeggio · G♭7♯5 · Piano
The G♭7♯5 arpeggio is G♭ – B♭ – D – F♭ — chord tones 1 3 ♯5 ♭7. G♭7♯5 is a dominant that wants extra tension before resolving down a fifth; its sound is floating, whole-tone. Below, every G♭, B♭, D, F♭ on the two-octave keyboard is marked, with the root in gold. Press play to hear a one-octave arpeggio, or tap any note.
Visualizer
Piano
Guitar · standard tuning
Play loops the arpeggio up and down one octave (switch Loop off for a single pass). Tap any marked note to hear it. “Show” switches or combines the fretboard and keyboard; “Sound” picks the instrument you hear. Audio is synthesized in the browser.
Your next 10 minutes
Locate D, F♭ on white keys and G♭, B♭ on black keys. Try each hand separately before playing together; choose a fingering that keeps the wrist relaxed, without stretching between notes.
Play G♭ – B♭ – D – F♭ in quarter notes at 60 bpm. Repeat starting from B♭, wrapping back to G♭. Do not speed up until every attack is even.
Alternate B♭ and F♭ above a sustained G♭. These are degree 3 and ♭7. End a four-bar phrase on either one instead of always returning to the root.
Listen for this: G♭7♯5 has the colour “floating, whole-tone”. Name the degrees as you play, so you can recognize the sound in another key rather than remembering only a shape.
Understand the sound
The raised fifth changes the dominant’s centre of gravity. Keep the major third and flat seventh clear while you listen to the altered fifth.
Here the third is B♭, and degree ♭7 is F♭. Play G♭ in the bass and compare these voices individually before combining them.
Try B♭ – D – F♭ – G♭ as quarter notes, then repeat the first note and omit the last. The second phrase uses the same harmony with a different shape.
Separate the bass from the upper notes. If the low register sounds muddy, move the upper voices up an octave before adding more notes.
The black-key pitches in this collection are G♭, B♭. Use the groups of two and three black keys to orient yourself. Play G♭ and B♭ with each hand separately before combining the hands.
Before moving on, close the diagram and name the notes: G♭ · B♭ · D · F♭. Then play a two-bar phrase from memory and leave two bars of silence.
On guitar
Reference
| Chord tone | Note | Interval from G♭ |
|---|---|---|
| 1 | G♭ | unison (0 semitones) |
| 3 | B♭ | major 3rd (4 semitones) |
| ♯5 | D | augmented 5th (8 semitones) |
| ♭7 | F♭ | minor 7th (10 semitones) |
Goes with: G♭ Whole tone (G♭ A♭ B♭ C D E). Voicings: G♭7♯5 voicings on piano.
Take it to the bandstand.Practice Radio streams endless changes to play the G♭7♯5 arpeggio over through all twelve keys, with the chord and scale shown live — plus ear-training and call & response modes.
▶ Open Practice RadioCommon questions
G♭ – B♭ – D – F♭. As chord tones: 1 3 ♯5 ♭7. Played one after another instead of together, that is the arpeggio.
G♭7♯5 is a dominant that wants extra tension before resolving down a fifth. Its character is floating, whole-tone.
G♭ Whole tone (G♭ A♭ B♭ C D E) — the arpeggio is the skeleton of that scale, so practise them together.
Play G♭ – B♭ – D – F♭ ascending from G♭, then descend; then start from each chord tone in turn (inversions) so your hand knows the shape from any note.
Keep going
Same arpeggio on guitar · Augmented 7th (7♯5) hub · chord-scale theory.
Other arpeggios from G♭