The C#m/G# chord is a C# minor chord, with the G# (the 5th) as the bass note.
The C# minor chord itself has a dark, melancholy sound. Playing the 5th of the chord (in the case of C#m, the 5th is G#) as the bass note, can make the chord sound even more dark and dramatic, even if it is only a subtle difference.
The chord is also referred to as C sharp minor over G sharp, or C#m ‘slash’ G#, or simply, C sharp minor with a G sharp in the bass.
Technically, the C sharp minor chord with the G sharp in the bass is a second inversion C sharp minor chord.
Some C#m/G# Chord Theory and Info
- The C#m/G# chord contains the notes G#, C# and E.
- It is a C# minor chord with a G# in the bass.
- The root note of C#m/G# is C#, the bass note is G#.