* Play and sing each line separately first (e.g., G, A, G, G). Use the same finger on the piano when doing so.
** Check by how much each part of the chord moves from one chord to the next.
* Play/sing complete chords down from the top note.
* Note the character of each chord (major, minor etc).
* Later, move the first note to the next white note (say, from G to A), and try to play the same progression in a different key. (First example is given). Note which black keys you had to play to make the progression sound right.
* NB: Read triads "down the diagonal" as you sing along.
1.
G A G G
E F D E
C C B C
(1 - starting note moved to A
A B A A
F# G E F#
D D C# D)
2.
G G# A G G
E E E D E
C C C B C
3.
G A Ab G G G
E F F E D E
C C C C B C