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 DD B3 A | GG DD C2 z2 | D3 F D2 CD | F2 G2 G2 Bc | d2 d2 B2 BA | G2 GD C2 B,C | D3 C B,2 C2 | %7
 D2 G2 G2 z2 || %8  