Produce music using the specified musical structure depicted in letters along with the provided musical theme.
X:1
L:1/8
Q:1/8=150
M:4/4
K:G
['BGBd gdBd', 'G2 GB dcBA GBdf e2 c2 c3']  
X:1
L:1/8
Q:1/8=150
M:4/4
K:G
 GA | BGBd gdBd | cAaf gedc | BGBd gdBd | AGFE DFAc | BGBd gdBd | cAaf gedc | BdBG AcAF | 
 G2 GF G2 :| GB | dcBA GBdf | e2 c2 c3 d | ecBc Aceg | f2 d2 dedc | BGDG BGdB | AFDF AFcA | 
 BGBd cAFA | G2 GF G2 :|  