Craft a musical masterpiece that imitates Bach's signature style  
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
 e e d c | B2 !fermata!A2 | e ^f g e | a2 !fermata!^g2 | a/b/ c' b b | !fermata!a4 | e e d c | %7
 B2 !fermata!A2 | e ^f g e | a2 !fermata!^g2 | a/b/ c' b b | !fermata!a4 | e e f e | %13
 d3/2 d/ !fermata!c2 | e ^f g e | a g/^f/ f2 | !fermata!e2 e e | d c/B/ B2 | !fermata!A4 |] %19
V:2
 c B A/^G/ A | A ^G E2 | c/B/ A G G | c/d/ e e2 | c/d/ e e3/2 d/ | c4 | c B A/^G/ A | A ^G E2 | %8
 c/B/ A G G | c/d/ e e2 | c/d/ e e3/2 d/ | c4 | c c d c | c B G2 | c c d c/d/ | e e e ^d | B2 c B | %17
 A A A ^G | E4 |] %19
V:3
 A E F/B,/ C | F E/D/ C2 | A/G/ ^F/E/ D C/D/ | E c B2 | A A A ^G | E4 | A E F/B,/ C | F E/D/ C2 | %8
 A/G/ ^F/E/ D C/D/ | E c B2 | A A A ^G | E4 | A G G G | A G/F/ E2 | G A G G | c B c B/A/ | %16
 ^G2 A B/c/ | d/D/ E F E/D/ | ^C4 |] %19
V:4
"Am" A,"Em/G" G,"Dm/F" F,3/2 E,/ |"Bm7b5/D" D,"E" E,"Am" !fermata!A,2 | %2
"Am" A,"D" D/C/"G/B" B,"C" C/B,/ |"Am" A,/B,/"Am/C" C/D/"E" !fermata!E2 | %4
"F" F"Am/E" E/D/"Esus4" E"E" E, |"Am" !fermata!A,4 |"Am" A,"Em/G" G,"Dm/F" F,3/2 E,/ | %7
"Bm7b5/D" D,"E" E,"Am" !fermata!A,2 |"Am" A,"D" D/C/"G/B" B,"C" C/B,/ | %9
"Am" A,/B,/"Am/C" C/D/"E" !fermata!E2 |"F" F"Am/E" E/D/"Esus4" E"E" E, |"Am" !fermata!A,4 | %12
"Am" A,/B,/"C" C"G7/B" B,"C" C |"Dm7/F" F,"G" G,"C" !fermata!C,2 | %14
"C" C"F#dim/B" B,/A,/"G/B" B,"C" C/B,/ |"Am" A,"Em" E,"F#m7b5/A" A,"B" B, | %16
"E" !fermata!E,2"Am" A,"Em/G" =G, |"Dm/F" F,"Am/E" E,"Bm7b5/D" D,"E" E, |"A" !fermata!A,4 |] %19  