Create a musical composition using the given alphabetical pattern and melodic theme.
X:1
L:1/16
Q:1/4=110
M:2/4
K:G
['G2G2 cBAG', 'G2d2 BdBG']  
X:1
L:1/16
Q:1/4=110
M:2/4
K:G
 G2G2 cBAG | FGAB AFED | G2G2 cBAG | B2d2 d4 | G2G2 cBAG | FGAB AFED | EFGE AGFE | D2G2 G4 :: 
 G2d2 BdBG | F2A2 FAFD | G2d2 BdBG | B2d2 d4 | B2d2 edcB | cBAG GFED | EFGE AGFE | D2G2 G4 :|  