Create a composition by utilizing the given alphabet-based musical pattern and the provided melodic theme.
X:1
L:1/8
M:9/8
K:D
['F2 D', 'D (BcB) (BAG) (FGA) B2 E E2', 'f2 d', 'd (gfe) (dcB) (AGF) B2 E E2']  
X:1
L:1/8
M:9/8
K:D
 FGF F2 D G2 E | (FGF) F2 D E2 D | (FGF) F2 D G2 B | (AFD) D2 F E2 D :| (BcB) (BAG) (FGA) | 
 B2 E E2 F G2 B | (ABc) (dcB) (ABc) | d2 D D2 F E2 D :| fgg f2 d g2 e | (fgf) f2 d e2 d | 
 (fgf) f2 d g2 b | (afd) d2 g e2 d :| (gfe) (dcB) (AGF) | B2 E E2 F G2 B | (ABc) (dcB) (ABc) | 
 d2 D D2 F E2 D :|  