Craft a musical piece that abides by the prescribed structural guidelines and the given theme.
X:1
L:1/16
Q:3/8=76
M:3/8
K:Gmin
['B2AG^FG B2AG^FG']  
X:1
L:1/16
Q:3/8=76
M:3/8
K:Gmin
 G2 | B2AG^FG | B2AG^FG | B2AG^FG | B2AG^FG | A4 G2 | B2B2A2 | d4 c2 | (AB/A/ G4 | G4) G2 | 
 B2B2G2 | A4 B2 | c2(A3G/A/ | G4) G2 | B2AG^FG | B2AG^FG | B2AG^FG | B2AG^FG | A4 G2 | B2B2A2 | 
 d4 c2 | (AB/A/ G4 | G4) G2 | B2B2G2 | A4 B2 | c2(A3B/A/ | G4) z2 |]  