Construct a music composition that complies with the designated structure and theme.
X:1
L:1/8
M:2/4
K:A
['de =c2']  
X:1
L:1/8
M:2/4
K:A
 AA=g=f/e/ | de =c2 | de =c2 | ddee | de =G2 | =c2 (3de=f | e3 d | =cBdc | BG A2 |]  