Craft a musical piece in accordance with the designated structure and theme.
X:1
L:1/8
Q:1/8=232
M:4/4
K:Amin
['BG dB']  
X:1
L:1/8
Q:1/8=232
M:4/4
K:Amin
|: G | EA AB cd eg | BG dB GA Bd | cB AB cd eg | BG dB cA AG | EA AB cd eg | BG dB GA Bd | 
 cB AB cd eg | BG dB cA AB | cd ef ge dc | BG dG eG dG | cd ef ge dc | BG dB cA AB | cg eg cg ec | 
 Gd Bd Gd BG | cg eg cg ec | BG dB cA A :|  