Generate a work of music that conveys the core principles of Bach's style.  
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
L:1/8
V:1
 z3 c | d d c A | G A/B/ c d | !fermata!c3 e/f/ | g a g e | c A/B/ c d | !fermata!c2 e e | e d e2 | %8
 !fermata!c2 z c | d d e2 | !fermata!c2 d d | e/d/ c/B/ A d | d c/B/ A2 | !fermata!G2 A B | %14
 c d !fermata!c z |] %15
V:2
 z3 G | G G G F/E/ | D E/F/ G G | !fermata!G3 c | d/e/ f/e/ d c | c F E A/G/ | !fermata!E2 c d | %7
 c/B/ A A ^G | !fermata!E2 z A | B B c/A/ _B | !fermata!A2 A =B | c/B/ A/G/ F F | E/B/ A/G/ G ^F | %13
 !fermata!D2 =F F | G G/F/ !fermata!E z |] %15
V:3
 z3 E | D/C/ B, C C | B, C/D/ G,/ C B,/ | !fermata!E3 G | G C D E/F/ | G C C3/2 B,/ | %6
 !fermata!G,2 G B | A A,/B,/ C B, | !fermata!A,2 z E | G G G2 | !fermata!F2 F/E/ D | %11
 C/E/ F/G/ C B,/A,/ | G, A,/B,/ E D/C/ | !fermata!B,2 C D | G,/ C B,/ !fermata!G, z |] %15
V:4
 z6"C" C2 |"G/B" B,A,"G" G,F,"C/E" E,2"F" F,2 |"G7/F" F,2"Am/E" E,D,"C/E" E,C,"Gsus4" G,2 | %3
"C" !fermata!C,6"C" C2 |"G/B" B,2"F/A" A,2"G/B" B,2"C" C2 |"C/E" E,2"F" F,G,"Am" A,C"Dm7/F" F,G, | %6
"C" !fermata!C,4"C" CB,"E7/G#" A,^G, |"Am" A,=G,"Dm/F" F,2"Am/E" E,4 | %8
"Am" !fermata!A,4 z2"Am" A,2 |"G" G,F,"Em7" E,D,"C7" C,4 |"F" !fermata!F,4"Dm" D,2"G" G,2 | %11
"C" C,2"Dm7" D,E,"F" F,2"Bdim/D" D,2 |"Em7" E,2"F#dim" ^F,G,"Am7/C" C,2"D" D,2 | %13
"G" !fermata!G,4"F" F,2"Bdim/E" E,D, |"C/E" E,C,"Gsus4" G,,2"C" !fermata!C,2 z2 |] %15  