Construct a musical composition following the given alphabetical structure and incorporating the specified motif.
X:1
L:1/8
M:4/4
K:Amix
['c2 (3ABc dcde f2 ef gfec', 'ef gfec']  
X:1
L:1/8
M:4/4
K:Amix
|: EAAB c2 (3ABc | dcde f2 ef | gfec dfec | dcAF G2 FG | EA AB c2 (3ABc | dcde f2 ef | gfec dedc |1 
 (3ABA AG A2 FG :|2 (3ABA AG A2 fg || a2 af g2 ge | f2 fd e2 ef | gfec dfec | dcAF G2 fg | 
 a2 af g2 ge | f2 fd e2 ef | gfec dfec | (3ABA AG A2 fg | a2 af g2 ge | f2 fd e2 ef | gfec dfec | 
 dcAF G2 FG | EAAB c2 (3ABc | dcde f2 ef | gfec dedc | (3ABA AG A2 FG ||  