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
['DADE FE D2 Adcd BAFA', 'D2 (3cde fded cA A2 fdef']  
X:1
L:1/8
M:4/4
K:D
|: (3BAG | DADE FE D2 | Adcd BAFA | BE E2 DE E2 | GFED BEGB | DADE FE D2 | Adcd BAFA | B2 e2 dBAG | 
 FAFE D2 :: (3cde | fded cA A2 | fdef geag | fded cABc | BFAF D2 (3cde | fded cA A2 | fdef g2 fg | 
 af (3gfe fdef | cABc d2 :|  