Compose a piece using the specified musical pattern based on the alphabet and the provided melodic theme.
X:1
L:1/16
M:2/4
K:G
['z A EG', 'fe df']  
X:1
L:1/16
M:2/4
K:G
 z B | z A EG FA dB | z A EG FD z B | z A EG FA d z | z D CE D2 :| g2 | fe df z c dB | 
 A2c z f gf ge | fe df z c dB | Ac e^g ag ae | fe df z c dB | Ac z f gf ge | fe df edcB | 
 A2 d2 dd z d ||  