Generate a piece of music. The title is Der Postknecht.  
X:1
T:Der Postknecht (227), S. 489
T:Der Postknecht (227), S. 489
C:Music21
L:1/8
M:none
I:linebreak $
K:F
V:1 treble 
V:1
 C | F3/2 F/ F3 G | A3/2 A/ A3 | A | G A B3 E | G F z3 | C | F3/2 F/ F3 G A3/2 A/ A3 | A | %9
 G A B3 E | G F z3 | c | c f c3 B | A c F2 z | c | c f c3 B | A c F2 z | c | c f A z | c | %20
 c f A z | C | F F A/ A/ c f A/ A/ | G A G/ G/ F F | C | F F A/ A/ c f A/ A/ | G A G/ G/ F z | %27
 c/ c/ c/ c/ | f/ A/ A/ A/ | G/ G/ A/ A/ | F/ F/ F/ F/ | c/ c/ c/ c/ | f/ A/ A/ A/ | A/ A/ G/ A/ | %34
 G/ G/ F || %35  