Create a musical composition based on the alphabetic representation of the predetermined pattern and the given melodic theme.
X:1
L:1/8
M:6/8
K:G
['DGF G2 A', 'AFA d2 d faf ge^c', 'd2 c BAB GBd gfg ece dBd']  
X:1
L:1/8
M:6/8
K:G
|: d | DGF G2 A | BAG ABc | dgf ded | ded cAF | DGF G2 A | GAB ABc | dgf ded cAF G2 :: F | 
 AFA d2 d | faf ge^c | def ecA | GFG AFD | AFA d2 d | faf ge^c | afa ge^c | ded d2 :: c BAB GBd | 
 gfg ece | dBd cAc BGB AFD | d^cd GBd | gba gfg | fed fed cAF G2 :|  