Craft a music piece according to the prescribed structure and the input theme.
X:1
L:1/16
M:2/4
K:G
['BDGB d2B2', 'dcBd g2f2 ecAc e2d2 cAFA cAFA'  
X:1
L:1/16
M:2/4
K:G
 BDGB d2B2 | BDGB d2B2 | cAFA cAFA | GFGA B2G2 | BDGB d2B2 | BDGB d2B2 | cAFA cAFA | G2G2G2 z2 :: 
 dcBd g2f2 | ecAc e2d2 | cAFA cAFA | GFGA B2G2 | dcBd g2f2 | ecAc e2d2 | cAFA cAFA | G2G2G2 z2 :|  