Generate a piece of music. It is monophony.  
X:1
T:Music21 Fragment
C:Music21
L:1/4
Q:1/4=92
M:4/4
I:linebreak $
K:none
V:1 treble 
V:1
"^Molto moderato" B2 ^F ^G | E2 E2 | B2 ^F ^G | E3 z | =d2 A B | G2 G2 | d2 A B | G3 z | A e d ^c | %9
 B A G ^F | E/^F/ A A A | A4 | A e d =c | B A G ^F | E/^F/ A A A | d4 | D4 | E/^F/ G/A/- A/B/ c | %18
 d4 | z B A G | B3 G | B3 G | B4 | z B A ^F | D4 | E/^F/ G/A/- A/B/ ^c | d4 | z B G ^F | B3 G | %29
 B3 G | B4 | z B ^c ^d | e4 | =d/=c/ B/A/- A ^G | B4 | z A B ^c | d4 | =c/B/ A/G/- G ^F | A G A G | %39
 G ^F E _E | D4 | E/^F/ G/A/- A/B/ c | d4 | e4 | z e d c | B2 A2 | G4- | G z z2 | D4 | %49
 E/^F/ G/A/- A/B/ c | d4 | z B A G | B3 G | B3 G | B4 | z B A ^F | D4 | E/^F/ G/A/- A/B/ ^c | d4 | %59
 z B G ^F | B3 G | B3 G | B4 | z B ^c ^d | e4 | =d/=c/ B/A/- A ^G | B4 | z A B ^c | d4 | %69
 =c/B/ A/G/- G ^F | A G A G | G ^F E _E | D4 | E/^F/ G/A/- A/B/ c | d4 | e4 | z e d c | B2 A2 | %78
 G4- | G4- | G4- | G z z2 || %82  