Create a musical composition that adheres to the provided structure and theme.
X:1
L:1/16
Q:1/4=90
M:2/4
K:Bb
['dc B2A2 G2dc B2A2 G2d2 e2ed c2fe', 'G2 d2 g2gf g2a2 b2B2 B2b2 bagf'  
X:1
L:1/16
Q:1/4=90
M:2/4
K:Bb
 dc | B2A2 G2dc | B2A2 G2d2 | e2ed c2fe | dedc B2d2 | cdcB ABAG | F2E2 D2dc | B2AG BAG^F | G4 G2 :: 
 d2 | g2gf g2a2 | b2B2 B2b2 | bagf edcB | ABcA F2GA | B2AB c2Bc | d2d2 g2>g2 | f2d2 e2fe | 
 dcB2 c2>d2 | cBBA GBAG | F2E2 D2dc | B2AG BAG^F | G4 G2 :|  