Create musical composition by adhering to the given musical structure represented by letters and integrating the given motif.
X:1
L:1/8
M:6/8
K:D
['def fed', 'a2 f']  
X:1
L:1/8
M:6/8
K:D
 A | def fed | cde edc | def fed | (f/g/)aa a2 :: f | fab a2 g | fed a2 f | gfg eag | fdd d2 :|  