Design chord combinations to enhance the harmony of the given musical composition.
d/d/ |: dB (A/B/c/B/) | AG G2 | (GF) A>A | (GF) Bd/d/ | dB (A/B/c/B/) | 
 AG e>G | (F/A/).A (A/c/).c |1 BB Bd/d/ :|2 BB B(A/B/) |:[K:F] .c.d c>A | 
 BE E/F/G/A/ | .B.c B>G | AF F/G/A/B/ | .c.d c>A | .G.d d/d/d | cA B/A/G |1 
 FA FA/B/ :|2 FA FF |:[K:Bb] F2 B2 | d2 f2 | B2 d2 | .c3 f | F2 A2 | c2 f2 | A2 c2 | 
 d3 B | F2 B2 | d2 f2 | B2 d2 | e3 c | G2 c2 | F2 B2 | A2 F2 |1 BF DF :|2 
 BF DF/F/ |: FB (A/B/c/B/) | AG G/^F/G | F=E/F/ Ac | dB B/A/B | FB A/B/c/B/ | 
 AG G/^F/G | F=E/F/ Ac |1 BB BF/F/ :|2 BB B z |]  
X:1
L:1/8
M:2/4
K:Bb
 d/d/ |:"Bb" dB (A/B/c/B/) |"Eb" AG G2 |"F7" (GF) A>A |"Bb" (GF) Bd/d/ | dB (A/B/c/B/) | 
"Cm" AG e>G |"F7" (F/A/).A (A/c/).c |1"Bb" BB Bd/d/ :|2"Bb" BB B(A/B/) |:[K:F]"F" .c.d c>A | 
"C7" BE E/F/G/A/ | .B.c B>G |"F" AF F/G/A/B/ | .c.d c>A |"Gm" .G.d d/d/d |"F" cA"C7" B/A/G |1 
"F" FA FA/B/ :|2"F" FA FF |:[K:Bb]"Bb" F2 B2 | d2 f2 | B2 d2 |"F7" .c3 f | F2 A2 | c2 f2 | A2 c2 | 
"Bb" d3 B | F2 B2 | d2 f2 | B2 d2 |"Cm" e3 c | G2 c2 |"Bb" F2 B2 |"F7" A2 F2 |1"Bb" BF DF :|2 
"Bb" BF DF/F/ |:"Bb" FB (A/B/c/B/) |"Eb" AG G/^F/G |"F7" F=E/F/ Ac |"Bb" dB B/A/B | FB A/B/c/B/ | 
"Cm" AG G/^F/G |"F7" F=E/F/ Ac |1"Bb" BB BF/F/ :|2"Bb" BB B z |]  