Design various chord structures to improve the overall harmony of the assigned musical composition.
(e3 | g2 c') | (b3 | b) z z | (d3 | f2 a) | (g3 | g) z z | G3 | (e2 f) | e z d | 
 d3 | G3 | (d2 e) | d z c | c3 | (e3 | g2 c') | (b3 | b) z z | (d3 | f2 a) | (g3 | 
 g) z z | e g c' | d' z c' | b z a | a3 | g ^f g | (a2 g) | (c3 | c) z z :: 
 f3/2 e/ d | f3/2 e/ d | e g c' | c'2 g | z b3/2 c'/ | b3/2 a/ f | z a3/2 b/ | 
 a3/2 g/ e | f3/2 e/ d | f3/2 e/ d | e g c' | c'2 b | a b c' | g2 f | e/e/ e d | 
 c z z ::[K:F] c3 | (d2 c) | A3 | z A c | f3 | g2 f | B3 | z c d | e2 b | z e3/2 d/ | 
 (c3 | c) d e | f2 a | z f3/2 d/ | (c3 | c) z A | c2 =B/c/ | d2 c | A3 | z A c | f2 e/f/ | 
 g2 f | B3 | z d f | e z d' | z c'3/2 b/ | a2 f | z b3/2 a/ | g3 | d2 e | 
 f3/2 f/ f | f z z :|  
X:1
L:1/4
M:3/4
K:C
"C" (e3 | g2 c') |"G7" (b3 | b) z z | (d3 | f2 a) |"C" (g3 | g) z z | G3 | (e2 f) |"G7" e z d | 
 d3 | G3 | (d2 e) |"C" d z c | c3 | (e3 | g2 c') |"G7" (b3 | b) z z | (d3 | f2 a) |"C" (g3 | 
 g) z z | e g c' | d' z c' |"F" b z a | a3 |"G7" g ^f g | (a2 g) |"C" (c3 | c) z z :: 
"G7" f3/2 e/ d | f3/2 e/ d |"C" e g c' | c'2 g |"G7" z b3/2 c'/ | b3/2 a/ f |"C" z a3/2 b/ | 
 a3/2 g/ e |"G7" f3/2 e/ d | f3/2 e/ d |"C" e g c' | c'2 b |"F" a b c' |"C" g2 f |"G7" e/e/ e d | 
"C" c z z ::[K:F]"F" c3 | (d2 c) | A3 | z A c | f3 | g2 f |"C7" B3 | z c d | e2 b | z e3/2 d/ | 
 (c3 | c) d e |"F" f2 a | z f3/2 d/ | (c3 | c) z A | c2 =B/c/ | d2 c | A3 | z A c | f2 e/f/ | 
 g2 f |"Bb" B3 | z d f |"C7" e z d' | z c'3/2 b/ |"F" a2 f | z b3/2 a/ |"C7" g3 | d2 e | 
"F" f3/2 f/ f | f z z :|  