Design a musical piece that embodies the spirit of Bach's creations.  
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 bass 
%%MIDI program 0
%%MIDI control 7 100
%%MIDI control 10 64
V:3 bass 
%%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 | E C D E | C B, !fermata!A, E | E D G E | C D !fermata!E E/^F/ | G A/B/ c B | %6
 A ^G !fermata!A A | B A G ^F | E ^D !fermata!E A | G ^F G E | E D !fermata!C E | F E/D/ C D | %12
 C B, !fermata!A, z |] %13
V:2
 z3 C | B, A, ^G, A,/B,/ | C ^G, !fermata!E, C | B, A, B, C | C B,/A,/ !fermata!B, B, | E D C D | %6
 C/B,/ B, !fermata!C C | B, ^F B, B,/A,/ | G,/A,/ B, !fermata!B, =D | D C D C | %10
 C B, !fermata!G, A, | A, B, A, A, | A, ^G, !fermata!E, z |] %13
V:3
 z3 A, | E, E, D, A, | A, E, !fermata!C, A, | E, =F, G, G, | A,/^G,/ A, !fermata!G, =G, | %5
 G,/E,/ ^F,/^G,/ A,/=G,/ =F, | ^F, E, !fermata!E, F, | ^F,/ E, ^D,/ E, D, | E, ^F, !fermata!G, F, | %9
 G, A, B, A, | A,/G,/ =F, !fermata!E, E, | D,/=C,/ B,, E, D,/E,/ | %12
 ^F, B,,/C,/4D,/4 !fermata!^C, z |] %13
V:4
 z3"Am" A,, |"E/G#" ^G,,"Am" A,,"G#dim/B" B,,"Am/C" C,/D,/ | %2
"Am/E" E,"E" E,,"Am" !fermata!A,,"Am" A,, |"Em/G" G,,"Dm/F" =F,,"Em" E,,/G,,/"C" C, | %4
"F" F,"Bm7b5/F" F,"E" !fermata!E,"Em" E,/D,/ |"C" C,3/2 B,,/"Am" A,,"Bdim/D" D, | %6
"D#dim7" ^D,"E" E,"Am" !fermata!A,,"D7" =D, |"G" G,,"F#m" ^F,,"Em" E,,"B" B,, | %8
"C" C,"B" B,,"Em" !fermata!E,,"D" D,/C,/ |"G/B" B,,"F#dim/A" A,,"G" G,,"Am" A,,/G,,/ | %10
"Fmaj7" =F,,"G7" G,,"C" !fermata!C,,"A/C#" ^C, |"Dm" D,"E/G#" ^G,,"Am" A,,/=G,,/"Dm/F" F,,/E,,/ | %12
"D#dim7" ^D,,"E" E,,"A" !fermata!A,, z |] %13  