Craft a musical piece that abides by the prescribed structural guidelines and the given theme.
X:1
L:1/4
M:2/4
K:G
['G A']  
X:1
L:1/4
M:2/4
K:G
 G A | B c | d d | c B | c A | d d | c B | A A | B A | G G | A G | F G | A A ||  