A Diminished Guitar Chord

also known as Adim, A°

  • your first finger goes on the first fret of the fourth string
  • your second finger goes on the first fret of the second string
  • your third finger goes on the second fret of the third string
  • the fifth string is open
  • the first and sixth strings are muted
Diagram of an A diminished guitar chord at the open position

Notes in an A Diminished Guitar chord

Root : A

Minor 3rd : C

Tritone : D#