Develop a musical work that captures the essence of Bach's compositions.  
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 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
L:1/8
V:1
 G G A A | B B !fermata!c2 | d d c c | B A/B/4c/4 A2 | !fermata!G2 G G | A A G F | %6
 !fermata!E2 G G | F F E D/E/4F/4 | D2 !fermata!C2 | c c B B | A A !fermata!G2 | G G F E | %12
 D D !fermata!C2 |] %13
V:2
 E E F F | F/E/ D !fermata!E2 | G G G ^F | D C/D/4E/4 D2 | D2 E/D/ C | C D D/E/ F/D/ | %6
 !fermata!C2 B, E | D D C/_B,/ A, | G,2 !fermata!G,2 | E/D/ C G2 | %10
 G/A/4G/4 ^F/4E/4F/ !fermata!B,2 | E E D C/B,/ | A, B, !fermata!G,2 |] %13
V:3
 C C C D | D G, !fermata!G,2 | D B, A, A, | G,/^F,/ E,/C/ C/B,/ A, | B,2 C G, | F, F, G, C/G,/ | %6
 !fermata!G,2 G, A, | A, G, G,3/2 F,/ | F,/E,/ D, !fermata!E,2 | G,3/2 ^F,/ D D | %10
 D C/A,/ !fermata!E2 | ^C A, A,2 | A,/D,/ G,/F,/ !fermata!E,2 |] %13
V:4
"C" C_B,"Am7" A,G,"F" F,E,"Dm" D,2 |"G7" G,2"G" G,,2"C" !fermata!C,4 | %2
"G/B" B,,C,"G/D" D,E,"Am9/B" A,,B,,"F#dim/C" C,D, |"G" G,,2"Am/C" C,2"Dpower" D,4 | %4
"G" G,,4"C" C,D,"C/E" E,C, |"F" F,E,"Dm" D,C,"G/B" B,,C,"F/A" A,,B,, | %6
"C" !fermata!C,4"Em" E,D,"A7/C#" ^C,A,, |"Dm" D,=C,"G7/B" B,,G,,"C" C,2"Dm/F" F,,2 | %8
"Gpower" G,,4"C" !fermata!C,4 |"C" C,B,,"Am" A,,2"G" G,,A,,"G/B" B,,C, | %10
"Dsus4" D,2"D#dim7" ^D,2"Em" !fermata!E,4 |"A7" A,,B,,"A7/C#" ^C,A,,"Dm" D,2"Am" A,,G,, | %12
"Dm/F" F,,2"G" G,,2"C" !fermata!C,,4 |] %13  