ChordB♭9♭138-string · Standard B♭ dominant ninth flat thirteen · Frets 3–4 F♯BEADGBE3R3♭79♭13noteB♭DA♭CG♭roleR3♭79♭13fret43434frets 3–4C1C2C3C4C5C6RootB♭1stD2ndF3rdA♭ StrumArpeggio