Craft a music piece according to the prescribed structure and the input theme.
X:1
L:1/8
M:6/8
K:Bmin
['B2 c d2 e', 'ecA (a2 f) (g2 e) (f2 c3'  
X:1
L:1/8
M:6/8
K:Bmin
 B2 c d2 e | fed"^tr" c3 | B2 c d2 e | f2 g fdB | B2 c d2 e | fed"^tr" c3 | A2 B c2 d | e2 a ecA :: 
 (a2 f) (g2 e) | (f2 d)"^tr" c3 | B2 c d2 e | f2 g fdB | aaf gge | ffd c3 | A2 B c2 d | 
 e2 a (ec)A :|  