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:2/4
K:G
['D GGFE A2 D2 G2 B,C D3']  
X:1
L:1/8
M:2/4
K:G
 D | GGFE | A2 D2 | G2 B,C | D3 D | GABB | BAAA | A>GFE | GDDD | B,DGA | B3 B | cAFF | G2 z |]  