A#dim Piano Chord

The A#dim chord is a diminished triad built on the root note A#. It contains the notes A#, C#, E.

How to play A#dim

Press all highlighted keys together. Use any comfortable fingering — for a right-hand triad, thumb on root, middle on 3rd, pinky on 5th is standard.

Master one chord at a time. Once A#dim feels natural, try the next chord chord, or browse easy piano songs to put it in context.