Develop a musical composition that includes the supplied motif while following the designated alphabetical pattern.
X:1
L:1/16
M:2/4
K:D
['a (af)(fa) (af)(fa) g2g2 f2>f2 (fd)(df) (fd)(df)']  
X:1
L:1/16
M:2/4
K:D
 a | (af)(fa) (af)(fa) | g2g2 f2>f2 | (fd)(df) (fd)(df) | e2{d}TcB/c/ d2 z ::  