Craft a music piece according to the prescribed structure and the input theme.
X:1
L:1/8
M:4/4
K:G
['Gzgf ge d2 eaag agef gded BdBA', 'G2 BG dGBG'  
X:1
L:1/8
M:4/4
K:G
|: Gzgf ge d2 | eaag agef | gded BdBA | GBAG EGDE :: G2 BG dGBG | A2 Bd efg z | G2 BG dGBG | 
 ABAG EGDE :|  