Create a composition by utilizing the given alphabet-based musical pattern and the provided melodic theme.
X:1
L:1/8
M:6/8
K:Amin
['A2 E FGA BGG', 'Bcd eAA cz(B B)GG BGG eAA']  
X:1
L:1/8
M:6/8
K:Amin
 A2 E FGA | BGG cBG | A2 E FGA | BGG dcB | A2 E FGA | BGG cBG | dzc BGG | BGG Bcd :: eAA cz(B | 
 B)GG BGG | eAA czB | cBA Bcd | eAA cz(B | B)GG BGG | eAA fz(e | e)dc BcA :|  