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:D
['d2 ed/e/ fd dc Be', 'FA A2']  
X:1
L:1/8
M:2/4
K:D
|: d2 ed/e/ | fd dc | Be e/f/e/d/ | cB A2 | d2 ed/e/ | fd dc | Be d/c/B/c/ | d2 !fermata!d2 :: 
 FA A/B/A/G/ | FA A2 | FA df | e/d/c/B/ A2 | FA G/B/A/G/ | FA A2 | de fg | a2 a2 :|  