Craft a music piece according to the prescribed structure and the input theme.
X:1
L:1/8
M:4/4
K:G
['GA (3BcB ABcd eaaa g2 ed (3cBA', '', 'BG AB (3cBA'  
X:1
L:1/8
M:4/4
K:G
 (3DEF | GA (3BcB ABcd | eaaa g2 ed | (3cBA BG AB (3cBA | GABG AGED | GA (3BcB ABcd | eaaa g2 ed | 
 (3cBA BG AB (3cBA | GEDE G2 :| z2 |: DGGG BGGB | dBcB d4 | (3Bcd BG AB (3cBA | GABG AGED | 
 GA (3BcB ABcd | eaaa g2 ed | (3cBA BG AB (3cBA |1 GABG AGED :|2 GEDE G4 ||  