Produce music using the specified musical structure depicted in letters along with the provided musical theme.
X:1
L:1/8
Q:1/2=80
M:2/2
K:D
['d2 d2', "fg afad' afad' bgbd' bgbd'"]  
X:1
L:1/8
Q:1/2=80
M:2/2
K:D
 A/B/c | d2 d2 d2 fg | afad' afed | bagf gfed | cdef e2 A/B/c | d2 d2 d2 fg | afad' afed | 
 bagf gfed | A2 d2 d2 :: fg | afad' afad' | bgbd' bgbd' | bagf gfed | cdef e2 fg | afad' afad' | 
 bgbd' bgbd' | d'c'ba gfed | A2 d2 d2 :|  