Compose harmonizing chords for the given musical piece.
"^A" F A G B | A f f/e/ f | G e e/d/ e | F d d A/G/ | F A G B | 
 A f f/e/ f | g f e/g/f/e/ | d f d2 || 
[K:G]"^B Note the key change!" g f e/g/f/e/ | d B B/A/ B | c A A/G/ A | 
 B G G e/f/ | g f e/g/f/e/ | d B B/A/ B | c B A/G/ A | G B G2 ||  
X:1
L:1/4
M:4/4
K:D
"^A""D" F A"G" G B |"D" A f f/e/ f |"G" G e e/d/ e |"D" F d d A/G/ |"D" F A"G" G B | 
"D" A f f/e/ f |"G" g f"A" e/g/f/e/ |"D" d f d2 || 
[K:G]"^B Note the key change!""G" g f"C" e/g/f/e/ |"G" d B B/A/ B |"Am" c A A/G/ A | 
"G" B G G e/f/ |"G" g f"C" e/g/f/e/ |"G" d B B/A/ B |"C" c B"D" A/G/ A |"G" G B G2 ||  