Generate a piece of music.  
X:1
T:Music21 Fragment
C:Music21
L:1/4
M:3/2
I:linebreak $
K:F
V:1 treble 
V:1
 C | F C F3 G/A/ | B G E !fermata!C G3/2 A/ | B B A2 F3/2 D/ | E F G2 G3/2 A/ | B d c2 F3/2 G/ | %6
 A F D C G3/2 F/ | E C F A c B | A G F2 G3/2 F/ | E C F A c B | A/ F/ G F3 x | %11  