Create a composition by utilizing the given alphabet-based musical pattern and the provided melodic theme.
X:1
L:1/4
M:2/2
K:G
['d2 e2 f3/2 g/ f e', 'f2 g2 a3/2 b/ a', 'd2 e2 f3/2 g/ f e', 'A F/G/ A d']  
X:1
L:1/4
M:2/2
K:G
 d2 e2 | f3/2 g/ f e | d e f (e/d/) | e A A A | d2 e2 | f3/2 g/ f e | d/e/d/e/ e3/2 d/ | d4 || 
 f2 g2 | a3/2 b/ a f | f d d A | d A F D | f2 g2 | a3/2 b/ a g | f d d (g/f/) | e4 || d2 e2 | 
 f3/2 g/ f e | d e f (e/d/) | e A A A | d2 e2 | f3/2 g/ f e | d/e/d/e/ e3/2 d/ | d4 || A F/G/ A d | 
 A F/G/ A d | A F/G/ A d | (c2 c2) | e c/d/ e a | e c/d/ e a | e (d/c/) B3/2 A/ | A4 ||  