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
['', 'D G2 G DB,D GBd gdB AEE', 'dcB AEE cEE (3ABc B AGE DB,D'  
X:1
L:1/8
M:6/8
K:G
 D |: G2 G DB,D | GBd gdB | AEE cEE | (3ABc B AGE | DB,D G,B,D | gfg dcB | ABc dcA |1 AGF G2 D :|2 
 AGF GDC |: B,DG Bdg | gfg dcB | AEE cEE | (3ABc B AGE | DB,D G,B,D | gfg dcB | ABc dcA |1 
 AGF GDC :|2 AGF G2 z ||  