Compose a piece of music by integrating the assigned letter representation and provided tune.
X:1
L:1/8
Q:1/8=150
M:3/4
K:D
['DF AF A2 dc BG B2 ef', 'fg af d2 Ad cB B2 ef']  
X:1
L:1/8
Q:1/8=150
M:3/4
K:D
 DF | AF A2 dc | BG B2 ef | ge c2 Bc | BA F2 DF | AF A2 dc | BG B2 ef | ge cA Bc | d2- d2 :| fg | 
 af d2 Ad | cB B2 ef | ge c2 Bc | BA A2 fg | af d2 Ad | cB B2 ef | ge c2 Bc | d2- d2 :|  