Craft a musical piece that abides by the prescribed structural guidelines and the given theme.
X:1
L:1/8
M:6/8
K:G
['GBA G2', 'G2 d egf g2 f ege dBG', 'A2 d egf g2 f ege dBG'  
X:1
L:1/8
M:6/8
K:G
 D | GBA G2 A | Bdg Bdg | GBA G2 B | AFD AFD | GBA G2 A | Bdg Bdg | ecA dBG | cAF G2 :: d | 
 egf g2 f | ege dBG | GFG dBG | BAA A2 || d | egf g2 f | ege dBG | GFG dBG | cAF G2 :|  