Utilize the alphabetic system of the specified musical pattern and the supplied melodic theme to create a piece of music.
X:1
L:1/8
M:4/4
K:C
['cB cG']  
X:1
L:1/8
M:4/4
K:C
 z6 G2 | cB cG cB cG | cB cG AG FE | FA DA FA DA | FA DA cB AG | FE FG AG AB | cG EG C2 z G | 
 EG CG EG CG |]  