Chord Am Minor

On the piano, the notes of Am are A, C and E. A is the root, C the minor third and E the fifth. All three keys of Am are white.

The gaps in Am are not equal. A to C is three and C to E is four semitones. The frequencies in this position are A4 at 440 Hz, C5 at 523.25 Hz and E5 at 659.25 Hz, with A4 tuned to 440 Hz.

Your right hand plays A with the thumb, C with the middle finger and E with the little finger. From A4 to E5 the hand spans seven semitones.

In the first inversion, A moves up an octave and the lowest note becomes C, the minor third. The fingers are 1 - 2 - 5. The second inversion starts on E, the fifth, and ends on C. The fingers are 1 - 3 - 5.

Move C in Am up a semitone, to C#, and you have A. It shares C and E with C, two of its three notes.

Am shows up in five keys. In C major it is the vi, in G major the ii and in F major the iii.