Compose a piece using the specified musical pattern based on the alphabet and the provided melodic theme.
X:1
L:1/8
Q:1/4=140
M:4/4
K:G
['G2 BG dGBG A/A/A', 'D2 g>age gddg e>fge geef gbeg dgBg']  
X:1
L:1/8
Q:1/4=140
M:4/4
K:G
"_Allegro" G2 BG dGBG | A/A/A cd edeg | G2 BG dGBG | A/A/A BG E2 D2 :: g>age gddg | e>fge geef | 
 gbeg dgBg | A/A/A BG E2 D2 :|  