Create a musical composition employing the given alphabetic structure and melodic theme.
X:1
L:1/8
M:2/4
K:C
['A A']  
X:1
L:1/8
M:2/4
K:C
 A A A G | E E E A, | A A A G | E2 z2 | A A A G | E C C A, | D D C G, | A,2 z2 |]  