Craft a composition that integrates the assigned alphabet-related musical pattern and the provided melodic theme.
X:1
L:1/8
M:2/4
K:D
['ff fe/d/', 'AF F>A GE EG FD FA']  
X:1
L:1/8
M:2/4
K:D
 d/B/ | AA/B/ A/B/d/e/ | ff fe/d/ | ff fe/d/ | ee f/e/d/B/ | AA/B/ A/B/d/e/ | ff fe/d/ | aA AB/c/ | 
 d3 :| B | AF F>A | GE EG | FD FA | dc/d/ e/d/c/B/ | AF F>A | GE EG | FD FA | d2 d :|  