Create a composition by utilizing the given alphabet-based musical pattern and the provided melodic theme.
X:1
L:1/8
M:6/8
K:D
['A2 a g2 f e2 d cde', 'F2 A D2']  
X:1
L:1/8
M:6/8
K:D
 A2 a g2 f | e2 d cde | f2 d faf | e3 c3 | A2 a g2 f | e2 d cde | fdf ece | d3 D3 :: F2 A D2 d | 
 F2 A D2 g | f2 d faf | e3 E3 | F2 A D2 d | F2 A D2 g | fdf ece | d3 D3 :|  