C7♯5 8-string guitar chord

How to play C7♯5 on 8-string guitar

The most common way, the first shape above: lay your index finger flat across the six strings from the low B to the high B at the 1st fret and your middle finger on the D string at the 2nd fret. Let the high E string ring open. Don’t play the F♯ and low E strings.

From the F♯ string x 1 x 1 2 1 1 0 (x: not played, 0: open)

What notes are in C7♯5?

C7♯5, C augmented seventh, is C, E, G♯ and B♭: the root (C), the major third (E), the augmented fifth (G♯) and the minor seventh (B♭). Its formula is 1 3 ♯5 ♭7.