C# 13b9 — Guitar (7-String)

C# 13b9 as shapes on BEADGBE: lowest position first, frets and fingers named, audio on tap.

C# 13b9 chord diagram, starting at fret 9. Strings low to high: B muted, E 9th fret, A 11th fret, D 9th fret, G 10th fret, B 11th fret, E 10th fret.

C# 13b9 stacks C# – D – F – G# – A# – B. The charts below place those tones on the Guitar (7-String)'s BEADGBE strings shape by shape, sorted from the lowest playable position on up — each one names its frets and fingers, and plays on tap.

The extra range changes the arithmetic but not the system: above the added low B the grid is the standard one, so every six-string shape survives — the new string extends it downward.

Treat the lowest shape as the address and the rest as the route: the same chord repeats along the neck, and choosing WHERE to grab it — near the nut or up where it bites — is most of the craft of rhythm playing.