Utilize the alphabetic system of the specified musical pattern and the supplied melodic theme to create a piece of music.
X:1
L:1/4
M:4/4
K:D
['A B', 'f e d']  
X:1
L:1/4
M:4/4
K:D
|:"D" A B c A | B d2 d | A B d A |"G" B3 B |"D" A B d e | f e d e | f e d B | A4 :: a f e d | 
 f e d f | a f e d |"G" B2 B2 |"D" a f e d | f e d e | f e d B | A4 :|  