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:A
['a3 f ec (3ABc', '(3cBA EA(3cBA dB(3cBA ce(3efg aecA |1 GBBd', 'Bcde f3', 'aecA GBBd cAAd [df]2 ed fded fded']  
X:1
L:1/8
M:2/2
K:A
 a3 f |:"^$" ec (3ABc dB (3cBA | EA(3cBA dB(3cBA | ce(3efg aecA |1 GBBd cAaf :|2 GBBd cAAd || 
 GBBd cBA=G |] f2 ed"^tr" f2 ed | ffed Bcde | f3 g aecA | GBBd cAAd | [df]2 ed fded | fded Bcde | 
 f3 g a2 ga | faea caBg | a2"^D.S. al @" (3fga |]  