Produce music using the specified musical structure depicted in letters along with the provided musical theme.
X:1
L:1/8
Q:1/2=90
M:2/2
K:D
['AFDF AFDF', 'fdfd fagf']  
X:1
L:1/8
Q:1/2=90
M:2/2
K:D
 (FG) | AFDF AFDF | A2 d4 cB | AFDF AFDF | G2 E4 FG | AFDF AFDF | A2 d4 fg | afdf gece | 
 d2 d2 d2 :: (ag) | fdfd fagf | ecec egfe | fdfd fagf | edcB A2 (ag) | fdfd fagf | ecec egfe | 
 fagf egec | d2 d2 d2 :|  