Produce music using the specified musical structure depicted in letters along with the provided musical theme.
X:1
L:1/8
M:9/8
K:G
['g ege', 'BAG cBA']  
X:1
L:1/8
M:9/8
K:G
|: g2 g ege dBG | g2 g ege f2 d | g2 g ege dBG | A2 g ege f2 d :: BAG cBA dBG | BAG cBA d2 G | 
 BAG cBA dBG | A2 g ege f2 d :|  