Construct a musical piece by amalgamating the designated alphabetical representation and the supplied musical theme.
X:1
L:1/8
M:4/4
K:Amix
['A2 Ae cA ec']  
X:1
L:1/8
M:4/4
K:Amix
 A2 Ae cA ec | Ae ce dB GB | A2 Ae cA ec | AG EF GE D2 | Ae e2 ce e2 | ae e2 dB GB | A2 Ae cA ec | 
 AG EF GA B/c/d | e2 ag eg fa | g2 ge dG B/c/d | e2 ag ed _cA | BG EF GA B/c/d | e2 ag eg fa | 
 g2 ge dB GB | A2 AB _cB cd | e2 fa ge dB |]  