Db Augmented (Dbaug)
Also written as C# Augmented (C# and Db are the same key).
1+3+#5
Notes in Db Augmented
C# (root)E#A
Inversions
Same notes as Db Augmented, with a different chord tone as the lowest note. Useful for smoother movement between chords instead of jumping around the keyboard.
Root position
C# in the bass
1st inversion
E# in the bass (Dbaug/E#)
2nd inversion
A in the bass (Dbaug/A)
Db Augmented is built from C#, E# and A.
Stretch the fifth of a major chord up by a semitone and the result is symmetrical: two identical major thirds stacked on top of each other. That symmetry means the chord has no clear sense of up or down, giving it a floating, slightly dizzying quality composers reach for when a moment needs to feel suspended or unresolved.