Create a composition by utilizing the given alphabet-based musical pattern and the provided melodic theme.
X:1
L:1/8
M:2/4
K:C
['G,>G,A,G, F,2 B,2 F,F,G,F, E,2 C2 E>EFE']  
X:1
L:1/8
M:2/4
K:C
 G,>G,A,G, | F,2 B,2 | F,F,G,F, | E,2 C2 | E>EFE | ED D2 | DDED | DC C2 |]  