Craft a music piece according to the prescribed structure and the input theme.
X:1
L:1/8
M:6/8
K:C
['B(BA) G']  
X:1
L:1/8
M:6/8
K:C
 B2 B(BA) G | (AB) d e2 z | d2 B(BA) G | ABd d2 (G/A/) | B2 B(BA) G | (AB) d e2 g | dBd ded | 
 (cB) A G2 ||  