Develop a musical composition in line with the given structure and theme.
X:1
L:1/8
M:6/8
K:D
['d2 A BGB Adf a2 f', 'fAA afe def'  
X:1
L:1/8
M:6/8
K:D
|: f2 e | d2 A BGB | Adf a2 f | gBB e2 d | cAA Ag/f/e | d2 A BGB | Adf a2 f | ged cAc |1 d3 :|2 
 d3- |: dfe | dAA fAA | afe def | gBB e2 d | cAA Afe |1 dAA fAA | afe def | ged cAc | d3- :|2 
 d2 A BGB | Adf a2 f | ged cAc | d3 ||  