Create a composition by utilizing the given alphabet-based musical pattern and the provided melodic theme.
X:1
L:1/8
M:2/4
K:Amin
['cd/ z/ BA']  
X:1
L:1/8
M:2/4
K:Amin
 AB |"Am" cd/ z/ BA |"Am" cd/ z/ BA |"G" B2 AG |"Am" cd/ z/ BA |"Am" cd/ z/ BA |"Em" e2 AB | 
"Am" cd/ z/ BA |"Am" cd/ z/ BA |"G" B2 AG |"Am" A2 GE |"G" DE GA |"G" BA Bc |"G" dc BA |"Am" e2 |] 
 AB |"Am" A2 a2 |"Am" e2 dc |"G" B2 AG |"Am" A2 a2 |"Am" e2 dc |"Em" e2 AB |"Am" A2 a2 | 
"Am" e2 dc |"G" BA BG |"Am" A2 GE |"G" DE GA |"G" BA Bc |"G" dc BA |"Em" e2 |]  