Build a musical number by combining the given character designation and the presented melodic structure.
X:1
L:1/4
M:4/4
K:D
['F F']  
X:1
L:1/4
M:4/4
K:D
|: A A/<B/ A G | F F F A | d f a g | f d c d | e f g/<a/g/<f/ | g e e e | 
 g g/4a3/8g3/8 f/g/4f3/8e/d3/8 | c c B c |1 d F/G/ ||2 d/x/f/f/ :|  