Construct a music composition that complies with the designated structure and theme.
X:1
L:1/8
M:2/4
K:D
['D2 DE F2 ED FEDA,']  
X:1
L:1/8
M:2/4
K:D
 A, | D2 DE | F2 ED | FEDA, | D2 DE | F2 ED | FEDA, | DDCD | E2 DC | DA,F,A, | DDCD | E2 DC | 
 DA,F, |]  