Create a set of chord combinations that enhance the harmony of the submitted musical composition.
G3 | E G B | (e3 | c) z z | A3 | F A d | (f3 | d) z c | B z g | g z d | c z g | 
 g z g | ^f e d | c A d | (G3 |1 G) z z :|2 G c/d/ e/f/ || g z g | g e3/2 c/ | 
 B a3/2 B/ | f3 | G/A/ B/c/ d | f G f | e c3/2 A/ | G c/d/ e/f/ | g z g | g e3/2 c/ | 
 A f3/2 A/ | f3 | e G e | d G d | (c3 | c) z z ||[K:F] c3 | c d3/2 A/ | (c3 | 
 B) z z | (e3 | e) f g | a2 f | c2 z | (c3 | c) d3/2 A/ | (c3 | G) z z | e a3/2 g/ | 
 d f3/2 e/ | (c3 | c) a/g/ f e | d =B c | d =B c | c A B | z g/f/ e/d/ | c A B | 
 c A B | B ^G A | z a/g/ f/e/ | d =B c | _e ^c d | a ^f g | z f d | c a f | 
 e d e | f3/2 f/ f | f z z |]  
X:1
L:1/4
M:3/4
K:C
"C" G3 | E G B | (e3 | c) z z |"F" A3 | F A d | (f3 | d) z c |"G7" B z g | g z d |"C" c z g | 
 g z g |"D7" ^f e d | c A d |"G" (G3 |1 G) z z :|2"G7" G c/d/ e/f/ ||"C" g z g | g e3/2 c/ | 
"G7" B a3/2 B/ | f3 | G/A/ B/c/ d | f G f |"C" e c3/2 A/ | G c/d/ e/f/ | g z g | g e3/2 c/ | 
"F" A f3/2 A/ | f3 |"C" e G e |"G7" d G d |"C" (c3 | c) z z ||[K:F]"F" c3 | c d3/2 A/ |"C7" (c3 | 
 B) z z | (e3 | e) f g |"F" a2 f | c2 z | (c3 | c) d3/2 A/ |"C" (c3 | G) z z |"C/G" e a3/2 g/ | 
"G7" d f3/2 e/ |"C" (c3 | c) a/g/ f e |"F" d =B c | d =B c |"C7" c A B | z g/f/ e/d/ | c A B | 
 c A B |"F" B ^G A | z a/g/ f/e/ | d =B c |"D7" _e ^c d |"Gm" a ^f g | z f d |"F/C" c a f | 
"C7" e d e |"F" f3/2 f/ f | f z z |]  