Formulate a musical piece by utilizing the specified motif and alphabet-based structure.
X:1
L:1/8
M:4/4
K:Amin
['A2 GE GABd']  
X:1
L:1/8
M:4/4
K:Amin
 AB |"Am" A2 GE GABd |"G" e2 dB degB |"Am" A2 GE GABd |"Em" egdB"Am" A2 AB |"Am" A2 GE GABd | 
"Em" e2 dB dega |"C" gedB"G" GABd |"Em" egdB"Am" A2 :: AB |"Am" Aaab a2 ge |"G" gaba gedB | 
"Am" Aaab a2 ge |"G" dBgB A/A/A AB |"Am" Aaab a2 ge |"G" gaba gedB |"F" Agab ageg | 
"G" dBgB"Am" A/A/A A2 :|  