Generate a piece of music. The title is The traditional tunes of the Child ballads.  
X:1
T:Music21 Fragment
L:1/8
M:4/4
I:linebreak $
K:Gmin
V:1 treble 
V:1
 D2 | D3 D B2 A2 | G2 DD C2 z2 | D4 D4 | C2 DF G2 Bc | d3 d B2 A2 | GD- D2 C2 B,C | D6 C B,- x C2 | %8
 B, D2 G2 G2 x2 || %9  