ChordB♭7♯9♭137-string · Standard B♭ dominant seventh sharp nine flat thirteen · Frets 4–6 BEADGBE4R3♭13♯95♭7noteB♭DG♭C♯FA♭roleR3♭13♯95♭7fret654664frets 4–6C1C2C3C4C5C6RootB♭1stD2ndF3rdA♭ StrumArpeggio