Generate a piece of music. The title is Folk song Number 21. It is related to Chinese culture.  
X:1
T:Folk song Number 21
T:Folk song Number 21
Z:Chung-kuo yin yueh yen chiu so
L:1/8
M:2/4
I:linebreak $
K:F
V:1 treble 
V:1
 dd d/c/A | c3 c | dd d/c/A | G3 G | gg gc | fd d2 | dd d/c/A | c3 c | d/f/c d/f/c | dG G2 | %10
 GA/c/ GF/D/ | d4 || %12  