Construct a musical composition following the given alphabetical structure and incorporating the specified motif.
X:1
L:1/8
M:4/4
K:Ador
['', 'cA A2 cdec', 'AB cdef g2 eg f2 df gfed']  
X:1
L:1/8
M:4/4
K:Ador
 AB |: cA A2 cdec | d2 gd BGGB | cA A2 cdec | dfec A2 AB :| cdef g2 eg | f2 df gfed | cdef gbag | 
 fdec A2 AB | cdef g2 eg | f2 df gfed | (3Bcd ef gbag | fdec A2 ||  