Develop a musical composition in line with the given structure and theme.
X:1
L:1/8
M:4/4
K:Ddor
['F2 DE', 'd2 Ad dcAG'  
X:1
L:1/8
M:4/4
K:Ddor
 F2 DE F2 DE | FEFG ECCE | F2 DE FGAG | FDEC A,DDE | F2 DE FGAB | cAGF EDCE | DEFG AddB | 
 cAGE ED D2 :| d2 Ad dcAG | F2 DF EC C2 | d2 Ad dcAG | Adce d2 de | fdec dcAB | cAGF EDCE | 
 DEFG AddB | cAGE ED D2 :|  