Develop a musical composition in line with the given structure and theme.
X:1
L:1/8
M:12/8
K:D
['dcd efg e2 d', 'B^AB e2 f'  
X:1
L:1/8
M:12/8
K:D
|: dAF | DF/G/A dcd efg e2 d | cec ABc dAG FGE | DFA dcd efg e2 d | c2 c ABc d3 :| dfg | 
 afd AFD B^AB e2 f | gec ABG F^EF d2 f | afd AFD B^AB e2 f | gec Ace d/e/fe de/f/g | 
 a2 f d2 A B^AB e2 f | g2 e c2 A F^EF de/f/g | afd afd bge B2 e/f/ | gec A[Gc][Ee] [Dd]3 ||  