Develop a musical composition incorporating the given motif while adhering to the outlined alphabetical form.
X:1
L:1/8
M:2/4
K:D
['d/e/ fa a>b af d>e ff', 'z z g2 g2 b b2 b']  
X:1
L:1/8
M:2/4
K:D
 d/e/ | fa a>b | af d>e | ff ed | e3 d/e/ | fa a>b | af d>e | ff ee | d2 z :: z | g2 g2 | b b2 b | 
 aa fd | e3 d/e/ | fa a>b | af d>e | ff dd | d2 z :|  