Compose a piece of music using the specified alphabetical notation system and the provided theme.
X:1
L:1/8
Q:1/8=180
M:6/8
K:G
['B2 d', 'A2 A']  
X:1
L:1/8
Q:1/8=180
M:6/8
K:G
 B | d2 g B2 d | G2 B AGB | A2 A ABd | e2 d B2 d | d2 g B2 d | G2 B AGE | A2 A ABA | G3 G2 :| B | 
 A2 A ABd | e2 d B2 d | A2 A ABd | e2 d B2 d | d2 g B2 d | G2 B AGB | A2 A ABA | G3 G2 :|  