Guitar chords in the key of A:
Chord Adim7 (5th fret) notes: Eb, A, C, F# and A. You should not play the 6th string.
This chord is played by placing a barre on fret five with your index finger.
Adim7 - A diminished seventh guitar chord's alternative names: A°, A°7, Ao7, A7dim. See also: Adim and Am7b5.
Steps: 1-b3-b5-6(or bb7).
1(A), b3(C), b5(D#/Eb), 6(F#/Gb).