Develop a musical composition utilizing the presented motif and adhering to the required structure.
X:1
L:1/8
Q:1/8=320
M:6/8
K:Amin
['E2 A A2', 'e2 a'  
X:1
L:1/8
Q:1/8=320
M:6/8
K:Amin
 A | E2 A A2 B | c2 A BGE | GAG AGE | G2 B GED | E2 A A2 c | BAG Bcd | ege dBG | A3 A2 :| z | 
 e2 a a2 b | c'2 a bge | g2 e g2 a | b2 a ged | e2 a abc' | bag a2 e | gfe dBG | A3 A2 :|  