Develop harmonious chord sequences that enhance the given musical composition.
C F A | c2 =B | c2 d | c3 | C F A | c2 =B | c2 A | B3 | C E G | B2 A | B2 c | B3 | B A B | 
 e2 d | c2 B | A3 || C F A |: c2 =B | c2 d | c3 | C F A | c2 =B | c2 A | B3 | z B c | 
 g2 f | e2 d | c3 | c =B c | e2 d | c2 E | F3/2 F/ F |1 C F A :|2 F z z |: 
 (c d) A | (c d) A | B z B | B3 | (B c) G | (B c) G | A z A | A3 | f z f | e z d | 
 d z c | c3 | c2 B | G2 c | F3/2 F/ F |1 F z z :|2[K:Bb] F z B |: A z c | e z A | 
 B z d | F z B | A z c | G z A | B z d | F z B | A z g | f z A | B z D | 
 F z B | A z c | G z A | B3/2 B/ B |1 B z B :|2 B z z |]  
X:1
L:1/4
M:3/4
K:F
"F" C F A | c2 =B | c2 d | c3 | C F A | c2 =B | c2 A |"C7" B3 | C E G | B2 A | B2 c | B3 | B A B | 
 e2 d | c2 B |"F" A3 || C F A |: c2 =B | c2 d | c3 | C F A | c2 =B | c2 A |"C7" B3 | z B c | 
"Bb" g2 f | e2 d |"F/C" c3 | c =B c |"C7" e2 d | c2 E |"F" F3/2 F/ F |1 C F A :|2 F z z |: 
"F" (c d) A | (c d) A |"C7" B z B | B3 | (B c) G | (B c) G |"F" A z A | A3 |"Bb" f z f | e z d | 
"F" d z c | c3 |"C7" c2 B | G2 c |"F" F3/2 F/ F |1 F z z :|2[K:Bb] F z B |:"F7" A z c | e z A | 
"Bb" B z d | F z B |"F7" A z c | G z A |"Bb" B z d | F z B |"F7" A z g | f z A |"Bb" B z D | 
 F z B |"F7" A z c | G z A |"Bb" B3/2 B/ B |1 B z B :|2 B z z |]  