Generate a piece of music. The title is The traditional tunes of the Child ballads.  
X:1
T:Music21 Fragment
L:1/4
M:4/4
I:linebreak $
K:none
V:1 treble 
V:1
 d | A A G A | c d A G | G A A c | d3 f/>e/ | d A c3/2 c/ | E3/2 D/ C D/E/ | G A G/ F E/ | D3 x || %9  