Craft a musical piece that abides by the prescribed structural guidelines and the given theme.
X:1
L:1/8
M:4/4
K:Amin
['EAAB cBAG', 'A,EEA, EFA,F GA,GF EDCD'  
X:1
L:1/8
M:4/4
K:Amin
 A3 B cBAG | EAAB cd B2- | BABd edcB | cdea z A_BA | EAAB cBAG | DECE DC B,2- | B,CDG z G,B,G, | 
 B,C A,2 z EED | EAAB cBAG | EAAB cd B2- | BABd edcB | cdea z A_BA | EAAB cBAG | DECE DC B,2- | 
 B,CDG z G,B,G, | B,C A,2 z A,A,G, |: A,EEA, EFA,F | GA,GF EDCD | D3 C DEGE | EDEG EEDC | 
 A,EEA, EFA,F | GA,GF EDCD | B,CDG z G,B,G, |1 B,CCB, CECB, :|2 B,C A,2 z EED ||  