Construct congruent chords that enhance the existing musical piece.
f2 d dcd | f2 d dcd | e2 e a2 a | f3 d3 | f2 d dcd | f2 d dcd | e2 e a2 a | 
 d3 d3 :: e^de a^ga | f3 d2 d | e^de a^ga | f3 d2 z | b2 g gfg | a2 f fef | 
 e2 e a2 a | d6 :|  
X:1
L:1/8
M:6/8
K:D
"D" f2 d dcd | f2 d dcd |"A" e2 e a2 a |"D" f3 d3 | f2 d dcd | f2 d dcd |"A" e2 e a2 a | 
"D" d3 d3 ::"A" e^de a^ga |"D" f3 d2 d |"A" e^de a^ga |"D" f3 d2 z |"G" b2 g gfg |"D" a2 f fef | 
"A" e2 e a2 a |"D" d6 :|  