Develop a musical work of art utilizing the unique approaches 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 c | c A/B/ c/d/ e | d d !fermata!c c | B A/B/ c d/c/ | B2 !fermata!A c | c A/B/ c/d/ e | %6
 d d !fermata!c c | B A/B/ c d/c/ | B2 !fermata!A d | e e B/c/ d | c c !fermata!B c | d A/B/ c B | %12
 A A !fermata!G c | B A/B/ c d/c/ | B2 !fermata!A z |] %15
V:2
 z3 E/F/ | G F G G | A G/F/ !fermata!E ^F | G =F E D/E/ | F E !fermata!E E/F/ | G F G G | %6
 A G/F/ !fermata!E ^F | G =F E D/E/ | F E !fermata!E G | G G D/E/ F | E ^F !fermata!^G A | %11
 A/G/ ^F E D | G ^F !fermata!D F | G ^F/^G/ A A/E/ | F E/D/ !fermata!C z |] %15
V:3
 z3 C | C C C C | C B, !fermata!G, A, | D D C/B,/ A, | A, ^G,/D/ !fermata!C C | C C C C | %6
 C B, !fermata!G, A, | D D C/B,/ A, | A, ^G,/D/ !fermata!C =G, | G, G,/A,/ B, B, | %10
 C/B,/ A, !fermata!E E | A, D G,/A,/ B, | E D/C/ !fermata!B, C | D D E A, | A, ^G, !fermata!E, z |] %15
V:4
 z3"Am" A, |"C/E" E,"F" F,"C/E" E,/D,/"C" C, |"D7/F#" ^F,"G" G,"C" !fermata!C,"F#dim/A" A,, | %3
"G" G,,"Dm" D,"Am" A,/G,/"Dm/F" F,/E,/ |"Bm7b5/D" D,"E" E,"Am" !fermata!A,,"Am" A, | %5
"C/E" E,"F" F,"C/E" E,/D,/"C" C, |"D7/F#" ^F,"G" G,"C" !fermata!C,"F#dim/A" A,, | %7
"G" G,,"Dm" D,"Am" A,/G,/"Dm/F" F,/E,/ |"Bm7b5/D" D,"E" E,"Am" !fermata!A,,"G/B" B,, | %9
"C" C,/D,/"Em" E,/F,/"G" G,"G#dim7" ^G, |"Am" A,"D#dim7" ^D,"E" !fermata!E,"Am" A,/G,/ | %11
"D/F#" ^F,/E,/"D" D,"C/E" E,/F,/"G" G, |"A7/C#" ^C,"D" D,"G" !fermata!G,,"F#dim/A" A,, | %13
"G/B" B,,/C,/"D" D,"Am" A,/G,/"Dm/F" F,/E,/ |"Bm7b5/D" D,"E" E,"Am" !fermata!A,, z |] %15  