Produce music using the specified musical structure depicted in letters along with the provided musical theme.
X:1
L:1/4
M:4/2
K:E
['B2 =c2 =d2']  
X:1
L:1/4
M:4/2
K:E
 B2 | =c2 =d2 d2 e2 | =d2 =c B A2 B2 | =c2 =d2 B2 d c | B3 A =G3 =F E2 B2 | =c2 =d2 d2 e2 | 
 =d2 =c B A2 B2 | =c2 =d2 B2 d c | B3 A =G3 =F E2 G2 | =c2 B2 A2 E2 | =D4 =C2 =G2 | A2 B2 =d3 d | 
 =c4 B2 =G2 | A2 =G2 =F2 E2 | E6 |]  