Compose a piece of music by integrating the assigned letter representation and provided tune.
X:1
L:1/8
M:2/4
K:D
['AF Af', 'f>f ff ed ed B/c/e/B/ A3 (3B/c/d/', '(3A/B/c/ df f(3A/B/c/']  
X:1
L:1/8
M:2/4
K:D
 A/B/ |{AB} AF Af | ed Bd/B/ | AF F/E/D/E/ |{FG} FE EA/B/ | AF Af | (3e/f/e/d Bd/B/ | 
 AF{G} F/E/D/E/ | FD D || A | f2 f>f | ff ed | ed B/c/e/B/ | A3 (3B/c/d/ | e2 A>B | (3A/B/A/G FG | 
 A/>B/ (3c/d/e/ f>e | d2 z || (3A/B/c/ | df f (3A/B/c/ | df f(3A/B/c/ | de/f/ gf | e2 z (3A/B/c/ | 
 df f(3A/B/c/ | df f>g | aa g/f/e/c/ | d2 z ||  