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
['DEG GAB deg gab agd ege dBG', "G eaa abc' eaa age dgg ged"  
X:1
L:1/8
M:6/8
K:G
 DEG GAB | deg gab | agd ege | dBG AGE | DEG GAB | deg gab | agd ege | dBG A2 G :| eaa abc' | 
 eaa age | dgg ged | ged BAG | DEG GAB | deg gab | agd ege | dBG A2 G :|  