Craft a music piece according to the prescribed structure and the input theme.
X:1
L:1/8
Q:1/8=180
M:4/4
K:G
['B2 AB', 'g2 dg g2 fg e2'  
X:1
L:1/8
Q:1/8=180
M:4/4
K:G
 G/E/ | DEGA B2 AB | B2 AB GE D2 | EAAG A2 EA | A2 BG AGEG | DEGA B2 AB | B2 AB GE D2 | 
 Be e2 dBge | dBAB G3 :| B | dggf g2 dg | g2 fg e2 d2 | eaag a2 ea | a2 ga e2 d2 | eggf g2 dg | 
 g2 fg e2 dB | Be e2 dBge | dBAB G3 :|  