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:G
['D G2 d BAG c2 e ABc', 'g2 f2 e2 d3 c B2']  
X:1
L:1/8
M:6/8
K:G
 D | G2 d BAG | c2 e ABc | d2 G cAF | G3 G2 :|[M:3/4] z | g2 f2 e2 | d3 c B2 | e2 d2 c2 | B3 A G2 | 
 g2 f2 e2 | d3 c B2 | cd ec AF | G4 G ||  