Create music using the given musical theme and adhere to the outlined letter-based structure.
X:1
L:1/8
M:3/4
K:Amin
['aa ef ed cB A^G AB cc', 'e4 ef g2 c2 Bc d2 B2']  
X:1
L:1/8
M:3/4
K:Amin
 aa ef ed | cB A^G AB | cc de fg | e2 e4 :: ef g2 c2 | Bc d2 B2 | cd e2 A2 | ^GA B2 E2 | e2 ab ag | 
 fe f2 d2 | d2 ga gf | ed e2 c2 | e2 fe dc | BA/^G/ A4 :|  