Design various chord structures to improve the overall harmony of the assigned musical composition.
F | d2 B | f d B | e c A | B d F | d2 B | f d B | e c A | B2 :| F | 
 F e c | F d B | F c A | B d F | F e c | F d B | F c A | B2 || f | 
 d f f | g3/2 f/ e/d/ | c e e | f3/2 e/ d/c/ | B d d | e3/2 d/ c/B/ | 
 A A/B/ c/A/ | B2 |]  
X:1
L:1/4
M:3/4
K:Bb
 F |"Bb" d2 B | f d B |"F7" e c A |"Bb" B d F | d2 B | f d B |"F7" e c A |"Bb" B2 :| F | 
"F7" F e c |"Bb" F d B |"F7" F c A |"Bb" B d F |"F7" F e c |"Bb" F d B |"F7" F c A |"Bb" B2 || f | 
"Bb" d f f |"Eb" g3/2 f/ e/d/ |"Cm" c e e |"Dm" f3/2 e/ d/c/ |"Gm" B d d |"Cm" e3/2 d/ c/B/ | 
"F7" A A/B/ c/A/ |"Bb" B2 |]  