Create a musical piece with the provided alphabetic notation system and theme.
X:1
L:1/8
M:9/8
K:G
['B2 d d2 A BAG', 'B2 d e2 f g2 a']  
X:1
L:1/8
M:9/8
K:G
|: B2 d d2 A BAG | E2 A A2 B cBA | B2 d d2 A BAG | D2 G G2 A BAG :: B2 d e2 f g2 a | 
 a2 A A2 B cBA | B2 d e2 f g2 a | g2 e d2 c BAG :|  