G# Suspended 2nd (G#sus2)
Also written as Ab Suspended 2nd (Ab and G# are the same key).
1+2+5
Notes in G# Suspended 2nd
G# (root)A#D#
Inversions
Same notes as G# Suspended 2nd, 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
A# in the bass
2nd inversion
D# in the bass
Play G#, A# and D# together and you get G# Suspended 2nd.
Suspended chords pull the third out entirely, so they land somewhere between major and minor rather than picking a side. Sus2 fills the gap with a major second sitting close to the root, which gives it an open, slightly hollow color. It's a favorite way to add movement to a strummed or arpeggiated part without changing the underlying harmony.