Develop a musical composition utilizing the presented motif and adhering to the required structure.
X:1
L:1/8
M:5/8
K:Amin
['A^G FED .E2 PE2', 'E3 D2'  
X:1
L:1/8
M:5/8
K:Amin
|:"^A" ^GA PA2 B | A^G FED | .E2 PE2 D | EF P^G2 A | B^G AEB | A^G FED | .E2 PE2 B, | E2 E2 z :: 
"^B" E2 E3 | A2 A3 | F2 ^G3 | F2 E3 | D2 E3 | E2- E3 | D2 D2 D | E2 E2 z :|  