Design a musical composition incorporating the alphabetic expression of the chosen structure and the provided melodic theme.
X:1
L:1/8
M:3/4
K:D
['AG F2']  
X:1
L:1/8
M:3/4
K:D
 DF | A2 AABB | AG F2 DF | A2 AABB | AG F2 A2 | FAAddd/d/ | cB/B/AdFA | BAcBcB | AG F2 A2 | 
 FAAddd/d/ | cB/B/AeFA | BAcBcB | AG F2 |]  