Craft a musical piece that embodies the unique essence found in 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 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 A | d e f g | e2 !fermata!c c | d d e e | !fermata!A3 A | d e f g | e2 !fermata!c c | d d e e | %8
 !fermata!A3 a | g f f e | !fermata!f3 e | f g a a | g2 !fermata!e e | f e d d | %14
 e d !fermata!c _B | A d d ^c | !fermata!d3 z |] %17
V:2
 z3 F | A A A G | G/A/ B !fermata!A A | F G G/_B/ A/G/ | !fermata!F3 F | A A A G | %6
 G/A/ B !fermata!A A | F G G/_B/ A/G/ | !fermata!F3 d | d d c c | !fermata!c3 c | c _B c d/c/ | %12
 B/A/ B !fermata!G c | c A F _B | _B/A/ =B A G | F G A A | A3 z |] %17
V:3
 z3 D | F E D D | C B, !fermata!E F | D _B, A, A, | !fermata!D3 D | F E D D | C B, !fermata!E F | %7
 D _B, A, A, | !fermata!D3 F | G _B A G | !fermata!A3 G | F3/2 E C/ F/E/ | D/F/ E/D/ !fermata!C G | %13
 F C D/E/ F | G F E C | C D/E/ F/E/4D/4 E/E/ | ^F3 z |] %17
V:4
 z3"Dm" D, |"Dm" D"A/C#" ^C"Dm" D"G/B" B, |"C" C"E/G#" ^G,"Am" !fermata!A,"F" F, | %3
"Bb" _B,"Gm" G,"A7/C#" ^C,"A/C#" C, |"Dm" !fermata!D,3"Dm" D, |"Dm" D"A/C#" ^C"Dm" D"G/B" B, | %6
"C" C"E/G#" ^G,"Am" !fermata!A,"F" F, |"Bb" _B,"Gm" G,"A7/C#" ^C,"A/C#" C, | %8
"Dm" !fermata!D,3"Dm" D |"Gm/Bb" _B,"Gm7" G,"F/C" C"C" C, |"F" !fermata!F,3"C" C | %11
"F/A" A,"Gm" G,"Fmaj7" F,"Dm" D, |"G" G,2"C" !fermata!C,"C" C | %13
"F/A" A,"Fmaj7" F,"Bb" _B,"Bbmaj7/A" A, |"Edim/G" G,"G#dim7" ^G,"Am" !fermata!A,"C7/E" E, | %15
"F" F,"Gm/Bb" _B,"Dm/A" A,"A" A,, |"D" !fermata!D,3 z |] %17  