Compose music that adheres to the provided musical structure and theme.
X:1
L:1/4
M:4/4
K:D
['A A']  
X:1
L:1/4
M:4/4
K:D
 D | D D =F F | D2 =C C | =F F G G | A2 z A | A A A A | =c2 A A | _B A G G | =F2 z F | _B B A =F | 
 G2 D G | =F _E D =C | B,2 z B, | =F G A/_B/ =c | _B2 A G | =F E D =C | G/A/_B/=c/ A2 | G2 =F F | 
 E2 D2 |]  