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:A
['e2 fe/d/cE A2']  
X:1
L:1/8
M:3/4
K:A
 E2 GAcA | c2 AG E2 | A2 cdec | e2 dBcA | e2 fe/d/cE | A2 B2 cA | e2 fe/d/cE | A2 Bc A2 |]  