Create a composition by utilizing the given alphabet-based musical pattern and the provided melodic theme.
X:1
L:1/4
M:6/4
K:Amix
['f3/2 g/ f']  
X:1
L:1/4
M:6/4
K:Amix
 d2 A d2 e | f3/2 g/ f e c a | d e d a2 g | f3 e3 | e2 f g3/2 a/ g | f3/2 g/ f e3/2 d/ c | 
 d e d c B c | B3 A3 |]  