Construct a musical composition following the given alphabetical structure and incorporating the specified motif.
X:1
L:1/8
M:4/4
K:A
['', 'ecBd cAAB', 'af ecef a/a/aaf ecBc ecaf', 'cffe f2', 'faef a2 ef afec Bffe f2 ef']  
X:1
L:1/8
M:4/4
K:A
 af |: ecBd cAAB | c2 cB ceaf | ecBd cAAB | cffe f2 af :| ecef a/a/aaf | ecBc ecaf | ecef afec | 
 Bffe f2 af | ecef a/a/aaf | ecBc ecaf | ecBd cAAB | cffe f2 ec |: B2 Bc A3 B | c2 cB ceaf | 
 ecBd cAAB |1 cffe f2 ec :|2 cffe f2 ef || a2 ef aefa | efae faef | a2 ef afec | Bffe f2 ef | 
 a2 ba f2 af | e2 fe c2 af | ecBd cAAB | cffe f2 af ||  