Create a piece of music that imitates the works of Bach.  
X:1
T:Music21 Fragment
T:Music21 Fragment
T:Music21
C:Music21
%%score 1 2 3 4
L:1/4
M:4/4
K:C
V:1 treble 
%%MIDI program 0
%%MIDI control 7 100
%%MIDI control 10 64
V:2 treble 
%%MIDI program 0
%%MIDI control 7 100
%%MIDI control 10 64
V:3 treble 
%%MIDI program 0
%%MIDI control 7 100
%%MIDI control 10 64
V:4 bass 
%%MIDI program 0
%%MIDI control 7 100
%%MIDI control 10 64
V:1
 z3 e | c d e/f/ g | f2 !fermata!e e/f/ | g g d e | c2 !fermata!B G | c d e e/=f/ | !fermata!d3 e | %7
 c d e/f/ g | f2 !fermata!e e/f/ | g g d e | c2 !fermata!B G | c d e f | e d !fermata!c z |] %13
V:2
 z3 c | A B c G | A G !fermata!G G/F/ | E/F/ G/A/ B B | A2 !fermata!D E | E G G G | !fermata!G3 B | %7
 A G G A | A2 !fermata!A G | G/A/ B/c/ d/c/ B/A/ | G A !fermata!G D | G A/B/ c B/A/ | %12
 G G/F/ !fermata!E z |] %13
V:3
 z3 G | F F G D | C D !fermata!C C | C C G G | G ^F !fermata!B, B, | C B, C C | !fermata!B,3 E | %7
 E D C/D/ E | E D !fermata!^C =C | D/C/ B,/A,/ G,/A,/ B, | E D !fermata!D B, | C F, G,/A,/ B, | %12
 C B, !fermata!G, z |] %13
V:4
 z3"C" C, |"F" F,/E,/"Bdim/D" D,"C" C,"G/B" B,, |"F/A" A,,"G7/B" B,,"C" !fermata!C,"C" C,/D,/ | %3
"C/E" E,/D,/"C/E" E,/F,/"G" G,"Em" E, |"F#dim/A" A,2"G" !fermata!G,"Em" E, | %5
"Am" A,"G" G,/F,/"C/E" E,/D,/"C" C, |"G" G,3"E/G#" ^G, |"Am" A,"G/B" B,"C" C"A7/C#" ^C | %8
"Dm" D"Dm" D,"A" !fermata!A,"C" =C |"G/B" B,/A,/"G" G,/A,/"G" B,"Em/G" G, | %10
"C/E" E,"D7/F#" ^F,"G" !fermata!G,"G7/F" =F, |"C/E" E,"Dm" D,"C" C,"Bdim/D" D, | %12
"C/E" E,/F,/"G" G,"C" !fermata!C, z |] %13  