Construct a musical composition following the given alphabetical structure and incorporating the specified motif.
X:1
L:1/8
M:6/8
K:A
['AAA cBA cde', 'c2 e']  
X:1
L:1/8
M:6/8
K:A
 a | AAA cBA | cde =g3 | =GGG B2 G | d2 =G BAG | AAA cBA | cde =g2 a | ede =gdB | AAA A2 :: e | 
 c2 e ece | AA=g f3 | c2 e ecA | B2 c dB=G | c2 e ece | AA=g f^ga | ece dB=G | AAA A2 :|  