Craft a musical piece that abides by the prescribed structural guidelines and the given theme.
X:1
L:1/4
M:3/4
K:Gmin
['A2 A B']  
X:1
L:1/4
M:3/4
K:Gmin
|: G G3/2 A/ | ^F2 F | G G3/2 B/ | A2 A | B B3/2 c/ |1 A2 A | B A G | ^F2 F :|2 A2 B | B A ^F/ | 
 G3 |]  