Create a composition that captures the spirit of Bach's greatest works.  
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
L:1/8
V:4 bass 
%%MIDI program 0
%%MIDI control 7 100
%%MIDI control 10 64
L:1/8
V:1
 z3 D | D C F G | A3/2 ^G/ !fermata!A B | c B c A | B/ d ^c/ !fermata!d d | =c A F D | %6
 E D !fermata!^C E | G/F/ E F D | E3/2 E/ !fermata!D z |] %9
V:2
 z3 A, | A,/B,/ C D E | E E !fermata!E =G | G G G3/2 F/4E/4 | D E !fermata!^F G/=F/ | E C C _B, | %6
 _B,/A,/ =B, !fermata!A, ^C | D A, A, _B, | _B,/ D ^C/ !fermata!A, z |] %9
V:3
 z6 F,2 | F,2 G,2 A,F, C2 | CB,/A,/ B,D !fermata!C2 D2 | E2 FD C2 CD/C/ | %4
 B,A, G,A, !fermata!A,2 D2 | G,3 F, F,2 F,2 | G,2 F,E, !fermata!E,2 A,2 | G,3 G, F,2 F,2 | %8
 G,_B, A,>G, !fermata!^F,2 z2 |] %9
V:4
 z6"Dm" D,E, |"Dm/F" F,2"Fsus2" F,E,"Dm" D,2"C" C,B,, | %2
"Am" A,,2"Esus4" E,2"Am" !fermata!A,,2"G" G,F, |"C/E" E,C,"G7/D" D,F,"C/E" E,C,"F" F,D, | %4
"G" G,F,"Em" E,A,"D" !fermata!D,2"G/B" B,,2 |"C" C,E,"F" F,2"F/A" A,,F,,"Bb" _B,,A,, | %6
"Edim/G" G,,2"G#dim7" ^G,,2"A" !fermata!A,,2"A" A,,2 | %7
"G/B" =B,,2"A7/C#" ^C,2"Dm" D,=C,"Bb" _B,,A,, |"Edim/G" G,,2"Asus4" A,,2"D" !fermata!D,,2 z2 |] %9  