Write a musical work incorporating the specified theme and letter-based framework.
X:1
L:1/8
Q:1/8=200
M:6/8
K:G
['BGG DGG BGB dcB']  
X:1
L:1/8
Q:1/8=200
M:6/8
K:G
 d/c/ |"G" BGG DGG | BGB dcB |"D" cAA EAA | cAc edc |"G" BGG DGG | BGB dcB |"D" cBc Adc | 
"G" BGG G2 :: d |"G" gfg GBd | gfg bag |"D" fdd Add | fdf agf |"C" egg"G" dgg |"C" cgg"G" Bgg | 
"D" cBc Adc |"G" BGG G2 :|  