Compose a piece of music using the specified alphabetical notation system and the provided theme.
X:1
L:1/8
M:6/8
K:G
['d2 B', 'BGG DGG e/f/ge dBG']  
X:1
L:1/8
M:6/8
K:G
|: a | b2 g gdB | cde d2 B | cde deB | A3 aga | b2 g gdB | cde d2 B | d2 B cBA | G3 G2 :: A | 
 BGG DGG | e/f/ge dBG | e2 g dcB | A3 AGA | BGG DGG | e/f/ge dBG | deB cBA | G3 G2 :|  