Construct congruent chords that enhance the existing musical piece.
|: A (A2 F) ABd(B | AF)FD E2 (FG) | A (A2 F) ABde | fafe d2 [fd]2 :: 
 e(AcA) e(AcA) | ABde f2 af | e(AcA) e(AcA) | e(gfe) d2 d2 :|  
X:1
L:1/8
M:2/2
K:D
|:"D" A (A2 F) ABd(B |"D" AF)FD"A7" E2 (FG) |"D" A (A2 F) ABde |"A7" fafe"D" d2 [fd]2 :: 
"A7" e(AcA) e(AcA) |"D" ABde f2 af |"A7" e(AcA) e(AcA) |"A7" e(gfe)"D" d2 d2 :|  