Construct a musical composition following the given alphabetical structure and incorporating the specified motif.
X:1
L:1/8
M:3/4
K:A
['[AE]2 a2 fg (3efg', '(3dBd d<c c>A (3cAc c<B']  
X:1
L:1/8
M:3/4
K:A
 [AE]2 a2 fg | (3efg af bg | [AE]2 a2 fg | (3efg ae cA | [AE]2 a2 fg | (3efg af bg | [AE]2 a2 fg | 
 (3efg a2 A2- :: A2 AB/c/ (3dBd | d<c c>A (3cAc | c<B B>c (3dBd | d<c c>A (3cAc | c<B BA A>G | 
 (3ABc e3 e | e2 f2 (3dBd | d<c c>A (3cAc | c<B B>c (3dBd | d<c c>A (3cAc | c<B BA A>G | 
 (3ABc A4 :|  