G# Suspended 4th (G#sus4)
Also written as Ab Suspended 4th (Ab and G# are the same key).
1+4+5
Notes in G# Suspended 4th
G# (root)C#D#
Inversions
Same notes as G# Suspended 4th, with a different chord tone as the lowest note. Useful for smoother movement between chords instead of jumping around the keyboard.
Root position
G# in the bass
1st inversion
C# in the bass
2nd inversion
D# in the bass
The notes G#, C# and D# make up G# Suspended 4th.
The other suspension raises the missing third up to a perfect fourth, which sits a half step above where the third would normally be. That closeness creates real tension, and it's why a sus4 chord so often falls straight back down into the plain major or minor triad on the same root a beat later.