Develop a piece of music conforming to the stated structure and theme.
X:1
L:1/4
M:none
K:D
['A A']  
X:1
L:1/4
M:none
K:D
 D | A A =F D | E =F G A | B =c d/c/ c | B2 A A | B =c d D | =F _B A A | =F G/A/ _B A | G =F/E/ D |]  