Map it slowly
Locate the root and F♯, A♯, C♯, D♯ on black keys. Try each hand separately before playing together; choose a fingering that keeps the wrist relaxed, without stretching between notes.
Arpeggio · F♯6 · Piano
The F♯6 arpeggio is F♯ – A♯ – C♯ – D♯ — chord tones 1 3 5 6. F♯6 is a tonic alternative to maj7, especially on the last chord of a tune; its sound is open, classic, swing-era. Below, every F♯, A♯, C♯, D♯ 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 the root and F♯, A♯, C♯, D♯ on black keys. Try each hand separately before playing together; choose a fingering that keeps the wrist relaxed, without stretching between notes.
Play F♯ – A♯ – C♯ – D♯ in quarter notes at 60 bpm. Repeat starting from A♯, wrapping back to F♯. Do not speed up until every attack is even.
Alternate A♯ and D♯ above a sustained F♯. These are degree 3 and 6. End a four-bar phrase on either one instead of always returning to the root.
Listen for this: F♯6 has the colour “open, classic, swing-era”. 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 sixth replaces the major seventh. Compare the softer root-and-sixth relationship with the half-step tension of a major seventh.
Here the third is A♯, and degree 6 is D♯. Play F♯ in the bass and compare these voices individually before combining them.
Try A♯ – C♯ – D♯ – F♯ 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 F♯, A♯, C♯, D♯. Use the groups of two and three black keys to orient yourself. Play F♯ and A♯ with each hand separately before combining the hands.
Before moving on, close the diagram and name the notes: F♯ · A♯ · C♯ · D♯. Then play a two-bar phrase from memory and leave two bars of silence.
On guitar
Reference
| Chord tone | Note | Interval from F♯ |
|---|---|---|
| 1 | F♯ | unison (0 semitones) |
| 3 | A♯ | major 3rd (4 semitones) |
| 5 | C♯ | perfect 5th (7 semitones) |
| 6 | D♯ | major 6th (9 semitones) |
Goes with: F♯ Major (Ionian) (F♯ G♯ A♯ B C♯ D♯ E♯). Voicings: F♯6 voicings on piano.
Take it to the bandstand.Practice Radio streams endless changes to play the F♯6 arpeggio over through all twelve keys, with the chord and scale shown live — plus ear-training and call & response modes.
▶ Open Practice RadioCommon questions
F♯ – A♯ – C♯ – D♯. As chord tones: 1 3 5 6. Played one after another instead of together, that is the arpeggio.
F♯6 is a tonic alternative to maj7, especially on the last chord of a tune. Its character is open, classic, swing-era.
F♯ Major (F♯ G♯ A♯ B C♯ D♯ E♯) — the arpeggio is the skeleton of that scale, so practise them together.
Play F♯ – A♯ – C♯ – D♯ ascending from F♯, 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 · Major 6th hub · chord-scale theory.
Other arpeggios from F♯