ChordB♭7(add13)8-string · Standard B♭ dominant seventh added thirteenth · Frets 1–3 F♯BEADGBER5♭7313noteB♭FA♭DGroleR5♭7313fret13133frets 1–3C1C2C3C4C5C6RootB♭1stD2ndF3rdA♭ StrumArpeggio