Compose a piece of music by integrating the assigned letter representation and provided tune.
X:1
L:1/8
M:4/4
K:Dmix
['=cA A2', 'AB=cA BG G2 BABd ^cA A2 ^cdeg']  
X:1
L:1/8
M:4/4
K:Dmix
 d^cde =cA A2 | BG G2 BAB^c | d2 ed =cA A2 | GBAG FD D2 | d^cde =cA A2 | BGEF GAB^c | d^cdf gbaf |1 
 ged^c AB=cA :|2 ge^cd e=ceg |: fa a2 ge^cA | dfed AB=cA | BG G2 BABd | ^cA A2 ^cdeg | 
 fa a2 ge^cA | dfed efga | bgeb af f2 |1 ge^cd e=ceg :|2 ged^c AB=cA ||  