Adim chord
A diminished
1 / 1
3
5
7
10
The Adim chord has the formula 1, b3, b5 with notes A, C, D#
The diminished chord is a variation of the minor chord with a flat 5th note. It is less common in popular music due to its high tension, but can sometimes be used as a bridge between two chords to emphasize the release of tension.