ChordC13♭9Hard5-string bass · Standard C thirteenth flat nine · Frets 11–15 BEADG11R313♭9♭7noteCEAD♭B♭roleR313♭9♭7fret1312121115frets 11–15C0C1C2C3C4RootC1stE2ndG3rdB♭ StrumArpeggio