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:D
['', 'F/G/ ::S', 'A2 F', 'eee ecA']  
X:1
L:1/8
M:6/8
K:D
 F/G/ |: ::S AAA AAA | fAd A2 F | GBG FAF | Eed cBA | AAA AAA | !>!f2 d A2 F | Ged cBc | d2 D D2 || 
 c/d/ | eee ecA | ffe def | eee ecA | dfe d2 c/d/ | eee ecA | aaa a^gf | eae dcB | 
 AFG AFGS!D.C.! :: :|  