Guitar arpeggio
Bb Dominant 7 Sharp 9 Guitar Arpeggio
Bb Dominant 7 Sharp 9 is a five-note arpeggio built from Bb, D, F, Ab, and C#. It is also commonly called Bb Dominant Seven Sharp Nine and Bb 7 Sharp 9. Use it to study chord tones, interval formulas, and guitar fretboard positions.
- Chord tones
- Bb, D, F, Ab, C#
- Formula
- 1 3 5 b7 #9
- Semitones
- 0 4 7 10 15
- Chord symbols
- Bb7#9
- Also called
- Bb Dominant Seven Sharp NineBb 7 Sharp 9
How to read this arpeggio
The chord tones are shown as pitch classes first. In the fretboard tool, square markers represent Bb root notes, while circular markers represent the remaining tones in the arpeggio.
Use the interactive fretboard to locate the Bb root notes and connect the remaining dominant 7 sharp 9 chord tones across standard tuning.
This same arpeggio shape is also commonly called Bb Dominant Seven Sharp Nine or Bb 7 Sharp 9.
Chord construction and defining tones
Bb dominant 7 sharp 9 is defined by 3 (D), b7 (Ab), and #9 (C#). The chord retains its major third and flat seventh while the sharp ninth adds an altered upper tension.
Harmonic use
Use this arpeggio over Bb7#9, altered dominant harmony, and dominant sounds that deliberately combine the major third with the sharp ninth.
Practice this arpeggio on guitar
- Play the Bb Dominant 7 Sharp 9 arpeggio from one Bb root to the next in at least two fretboard positions, saying each note name and interval degree aloud.
- Play 3 (D), b7 (Ab), and #9 (C#) in small groups and keep the major third and sharp ninth in separate octaves so both colors remain clear.
- Emphasize the sharp ninth over Bb7#9, then resolve it by semitone when the harmony changes.
Fretboard diagram
Open this arpeggio in the fretboard tool
Start with Bb Dominant 7 Sharp 9 loaded, then adjust tuning, labels, colors, fret count, and orientation.
Open in interactive fretboard