Produce music using the specified musical structure depicted in letters along with the provided musical theme.
X:1
L:1/8
M:2/2
K:D
['GBAG FDFD', 'd2 (cd) ecAc efge fdAd fgaf ecAc']  
X:1
L:1/8
M:2/2
K:D
 (3ABc | dAFA GBAG | FDFD GBAG | FDFD gfgB | AFDF E2 (3ABc | dAFA GBAG | FDFD GBAG | FAdf{a} gece | 
 d2 d2 d2 :: (cd) | ecAc efge | fdAd fgaf | ecAc efgf | edcB A2 A2 | BGDG BcdB | AFDF ABcA | 
 BcdB AGFE | D2 D2 D2 :|  