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:D
['FAA dAA', 'FAF G2 E']  
X:1
L:1/8
M:4/4
K:D
 A | FAA dAA | BAA dAA | FAA dAA | BAG FED :: FAF G2 E | FGA BGE | FAF G2 E | dAF FED :|  