Craft a music piece according to the prescribed structure and the input theme.
X:1
L:1/8
Q:3/8=120
M:6/8
K:G
['BAG DB,G, GBd', 'Bcd ded def'  
X:1
L:1/8
Q:3/8=120
M:6/8
K:G
 c | BAG DB,G, | GBd gdc | (BA)B G2 B | (A2 B) c3 | BAG DB,G, | GBd gdB | cdc BgB | (A2 B) c3 :: 
 Bcd ded | def gdc | Bcd ded | def g3 | Bcd ded | def gdB | cac BgB | (A2 B) c3 :|  