Create a composition by utilizing the given alphabet-based musical pattern and the provided melodic theme.
X:1
L:1/8
M:2/2
K:D
['FG AFAd BGBd AFAd (f/g/f)ed efgf', 'gfge cABc']  
X:1
L:1/8
M:2/2
K:D
 FG | AFAd BGBd | AFAd (f/g/f)ed | efgf edcd | (3efe (3dcB A2 FG | AFAd BGBd | AFAd (f/g/f)ed | 
 efgf edce | d2 f2 d2 :: ef | gfge cABc | dcde (f/g/f)ef | gfge cABc | (3efe (3dcB A2 FG | 
 AFAd BGBd | AFAd (f/g/f)ed | efgf edce | d2 f2 d2 :|  