Map it slowly
Locate E, B on white keys and C♯, G♯ on black keys. Try each hand separately before playing together; choose a fingering that keeps the wrist relaxed, without stretching between notes.
Arpeggio · C♯m7 · Piano
The C♯m7 arpeggio is C♯ – E – G♯ – B — chord tones 1 ♭3 5 ♭7. C♯m7 is the ii chord in a major ii–V–I, and minor-key tonics; its sound is soft, warm, unresolved. Below, every C♯, E, G♯, B 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 E, B on white keys and C♯, G♯ on black keys. Try each hand separately before playing together; choose a fingering that keeps the wrist relaxed, without stretching between notes.
Play C♯ – E – G♯ – B in quarter notes at 60 bpm. Repeat starting from E, wrapping back to C♯. Do not speed up until every attack is even.
Alternate E and B above a sustained C♯. These are degree ♭3 and ♭7. End a four-bar phrase on either one instead of always returning to the root.
Listen for this: C♯m7 has the colour “soft, warm, unresolved”. 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 minor third supplies the minor identity and the flat seventh keeps the sound open. Preserve both when reducing the chord to a small voicing.
Here the third is E, and degree ♭7 is B. Play C♯ in the bass and compare these voices individually before combining them.
Try E – G♯ – B – C♯ 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 C♯, G♯. Use the groups of two and three black keys to orient yourself. Play C♯ and E with each hand separately before combining the hands.
Before moving on, close the diagram and name the notes: C♯ · E · G♯ · B. Then play a two-bar phrase from memory and leave two bars of silence.
On guitar
Reference
| Chord tone | Note | Interval from C♯ |
|---|---|---|
| 1 | C♯ | unison (0 semitones) |
| ♭3 | E | minor 3rd (3 semitones) |
| 5 | G♯ | perfect 5th (7 semitones) |
| ♭7 | B | minor 7th (10 semitones) |
Goes with: C♯ Dorian (C♯ D♯ E F♯ G♯ A♯ B). Voicings: C♯m7 voicings on piano.
Take it to the bandstand.Practice Radio streams endless changes to play the C♯m7 arpeggio over through all twelve keys, with the chord and scale shown live — plus ear-training and call & response modes.
▶ Open Practice RadioCommon questions
C♯ – E – G♯ – B. As chord tones: 1 ♭3 5 ♭7. Played one after another instead of together, that is the arpeggio.
C♯m7 is the ii chord in a major ii–V–I, and minor-key tonics. Its character is soft, warm, unresolved.
C♯ Dorian (C♯ D♯ E F♯ G♯ A♯ B) — the arpeggio is the skeleton of that scale, so practise them together.
Play C♯ – E – G♯ – B ascending from C♯, 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 · Minor 7th hub · chord-scale theory.
Other arpeggios from C♯