Construct harmonious chord structures to elevate the given musical piece.
c a | a3 | z c a | b z e | z c b | b3 | z e d | d z c | z c a | a3 | z g f | 
 d z b | z e d | c2 a | a c g | f3/2 f/ f | f z z ||[K:C] e2 c/d/ | e2 c/d/ | 
 e d c | B3 | f2 d/e/ | f2 d/e/ | f e d | c3 | e2 c/d/ | e2 c | A2 d | f2 A | 
 G e f | e2 d | c3/2 c/ c | c e f |:[K:F] g z f | e z d | c3/2 f/ a | z c c | 
 B3/2 e/ g |1 z B B | A3/2 c/ f | z g/f/ e/f/ :|2 G3/2 c/ e | f3/2 f/ f | f z z || 
[K:Bb] d B g | f z d | B z G | F3 | f g a | b z d | f z ^f | g3 | e =e f | g z d | 
 e z =B | (c3 | c) d e | f g a | b3/2 b/ b | b z z |]  
X:1
L:1/4
M:3/4
K:F
 c a |"F" a3 | z c a |"C7" b z e | z c b | b3 | z e d | d z c | z c a |"F" a3 |"F7" z g f | 
"Bb" d z b | z e d |"F" c2 a |"C7" a c g |"F" f3/2 f/ f | f z z ||[K:C]"C" e2 c/d/ | e2 c/d/ | 
 e d c |"G7" B3 | f2 d/e/ | f2 d/e/ | f e d |"C" c3 | e2 c/d/ | e2 c |"Dm/F" A2 d | f2 A | 
"C" G e f |"G7" e2 d |"C" c3/2 c/ c | c e f |:[K:F]"C7" g z f | e z d |"F" c3/2 f/ a |"F" z c c | 
"C7" B3/2 e/ g |1 z B B |"F" A3/2 c/ f | z g/f/ e/f/ :|2"C7" G3/2 c/ e |"F" f3/2 f/ f | f z z || 
[K:Bb]"Bb" d B g | f z d |"Eb" B z G |"Bb" F3 | f g a | b z d | f z ^f |"Eb" g3 | e =e f | g z d | 
 e z =B |"F7" (c3 | c) d e | f g a |"Bb" b3/2 b/ b | b z z |]  