Develop a piece of music conforming to the stated structure and theme.
X:1
L:1/4
M:3/4
K:G
['A A']  
X:1
L:1/4
M:3/4
K:G
 D | G G G | G d G | A A A | A c A | B d A | B d G | B A A | A2 D | G G G | G B G | A A A | A c A | 
 B d G | B d c | B G A | G2 ||  