Create a composition by utilizing the given alphabet-based musical pattern and the provided melodic theme.
X:1
L:1/8
Q:3/8=100
M:6/8
K:G
['d3 e2{ef} g Tf2 e d2 f']  
X:1
L:1/8
Q:3/8=100
M:6/8
K:G
|: d3 e2{ef} g | Tf2 e d2 f | e2 ^c B2 c | d3 d3 |:  