ChordA♭13sus47-string bass · Standard A♭ thirteenth suspended fourth · Open position BEADGCFR4♭795noteA♭D♭G♭B♭E♭FroleR4♭79513fret444330frets 3–4C0C1C2C3C4C5RootA♭1stD♭2ndE♭3rdG♭ StrumArpeggio