Develop a musical composition using the outlined alphabetical depiction of the structure and the provided theme.
X:1
L:1/8
M:4/4
K:D
['', 'BE G2', 'D2 fg afde gbeg fdcd AGFG Addc']  
X:1
L:1/8
M:4/4
K:D
 dB |: AD(3FED AD(3FED | Adcd fdcd | BE G2 BE G2 | Bded cdeg | fB B2 fB B2 | fafc deag | 
 fdec dBAG | FGEF D2 :: fg | afde gbeg | fdcd AGFG | Addc defg | a2 ^gb a2 f=g | a3 f g3 e | 
 f3 d dfag | fdec dBAG | FGEF D2 :|  