Develop a musical composition in line with the given structure and theme.
X:1
L:1/8
M:6/8
K:D
['F2 E FDD def ecA', 'dcd f3 dfa'  
X:1
L:1/8
M:6/8
K:D
 F2 E FDD | def ecA | F3 DEF | G2 A BAG | F2 E FDD | def ecA | fef gec | ABc d2 A :| dcd f3 | 
 dfa afa | dfa adf | e=ce gfe | dcd f3 | dfa afd | ABA GFE | FDD D3 :|  