Generate a piece of music.  
X:1
T:Music21 Fragment
C:Music21
L:1/8
M:6/8
I:linebreak $
K:D
V:1 treble 
V:1
 D | F2 F F3/2 E/F | D2 D D2 D | F3/2 F/F FED | A2 A !fermata!A2 A/G/ | FAd e3/2 d/e | f3 e2 A/G/ | %7
 F3/2 A/d eBc | d3- d2 x | %9  