Create a musical composition using the given alphabetical pattern and melodic theme.
X:1
L:1/8
M:6/8
K:G
['B/c/ dBG dBG efg dBG cec BdB', 'FED dBG ecA gag fed fed cAF', 'G2 G Ggf gag =fde f3 =F=fe', 'dcA G{a}gf gag =fde f3 cde =fcA']  
X:1
L:1/8
M:6/8
K:G
 B/c/ | dBG dBG | efg dBG | cec BdB | cAG FED || dBG ecA | gag fed | fed cAF | AGG G2 :: G | 
 Ggf gag | =fde f3 | =F=fe fgf | edc dcA || G{a}gf gag | =fde f3 | cde =fcA | AGG G2 :|  