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:2/2
K:D
['fedf gbeg', 'FAdf eAgA']  
X:1
L:1/8
M:2/2
K:D
 a | fedf gbeg | fadf e/d/c/B/ Aa | fedf gbeg | (3fga (3ABc d3 :: A | FAdf eAgA | 
 fadf e/d/c/B/ AA | FAdf eAgA | faAc d2 d :|  