Compose a piece of music by integrating the assigned letter representation and provided tune.
X:1
L:1/4
M:3/4
K:F
['B c', 'f d2']  
X:1
L:1/4
M:3/4
K:F
 B A G | F2 c | f2 c | d A B | c F G | A2 B | c C2 | F3 || f e f | d2 c | f d2 | c3 | B A G | 
 F2 G | A2 B | (c3/2 d/) c ||  