Produce music using the specified musical structure depicted in letters along with the provided musical theme.
X:1
L:1/8
M:6/8
K:Gmin
['GAG BcB AFF F2 A GAG gag', 'G3 gag gab aff f2 a gef']  
X:1
L:1/8
M:6/8
K:Gmin
|: GAG BcB | AFF F2 A | GAG gag | fdd d2 =e | fgf fed | cdB ABc | ded d2 c | BGG G3 :: gag gab | 
 aff f2 a | gef gab | afd d2 =e | fgf fed | cdB ABc | ded d2 c | BGG G3 :|  