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 d>cB AGF', 'd d>cB AGF'  
X:1
L:1/8
M:6/8
K:G
"^A" d |: d>cB AGF | G>AB cde | d2 d dcB |1 B3 A2 d :|2 A3 G2 ||"^B" d | d>cB AGF | G3 A2 d | 
 d>cB AGF | G3 A2 d | d>cB AGF | G>AB cde | d2 d dcB | A3 G2 ||  