Construct a musical composition following the given alphabetical structure and incorporating the specified motif.
X:1
L:1/8
M:4/4
K:A
['e f2 ed c2 BA']  
X:1
L:1/8
M:4/4
K:A
 c3 A F2 GA | G2 F2 E3 e | f2 ed c2 BA | e6 z e | f2 ed c2 BA | cd cA F2 GA | Bc BA E2 FG | 
 A6 z2 |]  