Craft a music piece according to the prescribed structure and the input theme.
X:1
L:1/8
M:3/4
K:Emin
['ef gf ga ba g2 fg af', 'b2 b2', 'ed cB AG GF GA BA B2'  
X:1
L:1/8
M:3/4
K:Emin
 ef | gf ga ba | g2 fg af | e2 B2 de | d4 gf | ed cB AG | GF GA BA | B2 e2 e2 | e4 :| ef | 
 g2 b2 b2 | b2 a2 g2 | fe de fg | a2 g2 f2 | gf ga ba | g2 fa gf | e2 B2 de | d4 |] Bd | ef ed ed | 
 BA Bd ef | gf ga ba | g2 fa gf | e2 B2 de | d4 gf | ed cB AG | GF GA BA | B2 ed ef | g2 abag | 
 ed cB AG | GF GA BA | B2 e2 e2 | e4 |]  