Compose music by following the designated structure and integrating the suggested musical idea.
X:1
L:1/8
M:2/2
K:Bb
['F2 DG F2', 'd2 B2'  
X:1
L:1/8
M:2/2
K:Bb
 AG | F2 DG F2 DE | DF B4 AG | F2 DG F2 DF | G2 C2 C4 | F2 DG F2 DE | DF B4 c2 | d2 B2 ABcA | B6 :: 
 Bc | d2 d4 d2 | c2 A2 cdce | d2 B2 d2 B2 | cBAG F4 | d2 d4 d2 | cBAB cdce | d2 B2 ABcA | B6 :|  