Produce music using the specified musical structure depicted in letters along with the provided musical theme.
X:1
L:1/8
M:3/4
K:A
['A=c e3']  
X:1
L:1/8
M:3/4
K:A
 A=c e3 d | =f2 e2 =c2 | A=c e3 d | =cB A2 E2 | GA c3 B | d2 e2 B2 | A=c e3 B | =cA G2 E2 | 
 dc B2 A2 |]  