ChordB♭9♭138-string bass · Standard B♭ dominant ninth flat thirteen · Open position F♯BEADGCFR♭7♭13noteB♭DA♭CG♭roleR3♭79♭13fret10101fret 1C0C1C2C3C4C5RootB♭1stD2ndF3rdA♭ StrumArpeggio