Ab Power Chord (5) (Ab5)
Also written as G# Power Chord (5) (G# and Ab are the same key).
1+5
Notes in Ab Power Chord (5)
G# (root)D#
Inversions
Same notes as Ab Power Chord (5), 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
D# in the bass (Ab5/D#)
Ab Power Chord (5) consists of G# and D#, played at the same time.
Just a root and a fifth, no third at all. That makes it neither major nor minor, which is why rock guitar and simple piano left-hand parts lean on it so much. It sounds strong and neutral, and it leaves room for a singer or another instrument to decide the mood.