D# Suspended 4th (D#sus4)
Also written as Eb Suspended 4th (Eb and D# are the same key).
1+4+5
Notes in D# Suspended 4th
D# (root)G#A#
Inversions
Same notes as D# 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
D# in the bass
1st inversion
G# in the bass
2nd inversion
A# in the bass
The notes D#, G# and A# make up D# 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.