Craft a musical piece that abides by the prescribed structural guidelines and the given theme.
X:1
L:1/8
Q:1/8=232
M:4/4
K:Amin
['A,2 EA, AA,']  
X:1
L:1/8
Q:1/8=232
M:4/4
K:Amin
|: C | A,2 EA, AA, EC | B,G DG B,G, G,B, | A,2 EA, AA, ED | CA B,^G AA, A,C | A,2 EA, AA, EC | 
 B,G DG B,G, G,B, | A,2 EA, AA, ED | CA B,^G AA, A,E | A2 cA eA c2 | Bg dg BG GB | A2 cA eA c2 | 
 BE ^GE A2 AB | A/A/A cA eA cA | G/G/G BG dA Bd | ec dB cA BG | AF ED CA, A, :|  