Produce music using the specified musical structure depicted in letters along with the provided musical theme.
X:1
L:1/8
Q:1/8=232
M:4/4
K:G
['BG FG']  
X:1
L:1/8
Q:1/8=232
M:4/4
K:G
|: G2 BG FG AB | cd ef gf ef | d2 BG FG Ac | Bd AF GE DE | G2 BG FG AB | cd ef gf ef | 
 d2 BG FG Ac | Bd AF G3 B | df ga bf ga | bg af gf ef | d2 BG FG Ac | Bd AF GE DB | df ga bf ga | 
 bg af gf ef | d2 BG FG Ac | Bd AF G2- G2 :|  