Generate a piece of music. The title is Untreue.  
X:1
T:Untreue (3-23), S. 78
T:Untreue (3-23), S. 78
C:Music21
L:1/4
M:none
I:linebreak $
K:F
V:1 treble 
V:1
 F/ F/ F/ | c2 d | c3/2 B/ c | A F | F | F F c | B3/2 A/ G | F G A | G C z | C D E | G2 c | B G A | %12
 F z/ || %13  