ChordA7♭9♭135-string bass · Standard A dominant seventh flat nine flat thirteen · Open position BEADG3♭7♭13♭9noteC♯GAFB♭role3♭7R♭13♭9fret23033frets 2–3C0C1C2C3C4RootA1stC♯2ndE3rdG StrumArpeggio