G Suspended 4th (Gsus4)
1+4+5
Notes in G Suspended 4th
G (root)CD
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 (Gsus4/C)
2nd inversion
D in the bass (Gsus4/D)
Press G, C and D together on the keyboard and you're playing 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.