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:Amin
['ADDA DDAD ABcd cBAG ADDA DD F2', 'Addc ABcA GEED CDEG']  
X:1
L:1/8
M:4/4
K:Amin
 ADDA DDAD | ABcd cBAG | ADDA DD F2 | GFED CEG^G | ADDA DDAD | ABcd cBAG | ADDA DD F2 | 
 GFED CEG^G :: Addc ABcA | GEED CDEG | Addc ABcd | egge d4 | Addc ABcA | GEED CDEG | AdcA GE D2 | 
 C2 A,2 A,4 :|  