Design a piece of music by fusing the provided alphabetic indicator and the predetermined tune.
X:1
L:1/4
M:4/4
K:Amix
['A3/2 B/ A B d e f2', 'a3/2 a/ a b a g f2']  
X:1
L:1/4
M:4/4
K:Amix
 A3/2 B/ A B | d e f2 | e d B2 | f e f/ a3/2 | A3/2 B/ A B | d e f2 | e d B G | A2 A2 || 
 a3/2 a/ a b | a g f2 | e d B2 | f e f/ a3/2 | a3/2 a/ a b | a g f2 | e d B G | A2 A2 |]  