Create a composition by utilizing the given alphabet-based musical pattern and the provided melodic theme.
X:1
L:1/8
M:3/4
K:G
['DEF G2 d2 B2 g3 edB G2']  
X:1
L:1/8
M:3/4
K:G
 DEF | G2 d2 B2 | g3 edB | G2 F2 d2 | c3 DEF | AdcedF/d/ | G2 e2 d2 | B6 |]  