D Suspended 2nd (Dsus2)
1+2+5
Notes in D Suspended 2nd
D (root)EA
Inversions
Same notes as D 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
D in the bass
1st inversion
E in the bass (Dsus2/E)
2nd inversion
A in the bass (Dsus2/A)
D Suspended 2nd consists of D, E and A, played at the same time.
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.