Compose a music work that reflects Bach's approach  
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
L:1/8
V:4 bass 
%%MIDI program 0
%%MIDI control 7 100
%%MIDI control 10 64
L:1/8
V:1
 z3 e | A B/c/ d c | B B !fermata!A d | d d e d | e ^f !fermata!g e | d c B A | B2 !fermata!A e | %7
 A B/c/ d c | B B !fermata!A d | d d e d | e ^f !fermata!g e | d c B A | B2 !fermata!A B | %13
 c d e f | e d !fermata!c e | g f e A/B/ | c B !fermata!A z |] %17
V:2
 z3 A | A ^G/A/ B3/2 A/ | A/^G/4^F/4 G !fermata!E A | G/^F/ G G G | c/ e ^d/ !fermata!e c | %5
 B E/^F/ ^G A | A ^G !fermata!E A | A ^G/A/ B3/2 A/ | A/^G/4^F/4 G !fermata!E A | G/^F/ G G G | %10
 c/ e ^d/ !fermata!e c | B E/^F/ ^G A | A ^G !fermata!E =G | G/ c B/ c d | d/ c B/ !fermata!G G | %15
 G/B/ A/G/ G F | E/ A ^G/ !fermata!E z |] %17
V:3
 z6 CD | E2 DE FE E2 | FD B,E/D/ !fermata!C2 DC | B,C DB, C2 D2 | CB, A,2 !fermata!B,2 A2 | %5
 A^G A2 ED C2 | FD B,E/D/ !fermata!C2 CD | E2 DE FE E2 | FD B,E/D/ !fermata!C2 DC | B,C DB, C2 D2 | %10
 CB, A,2 !fermata!B,2 A2 | A^G A2 ED C2 | FD B,E/D/ !fermata!C2 D2 | E2 F2 G2 G2 | %14
 G2 AG/F/ !fermata!E2 E2 | DE CD E2 D^G, | A,E E>D !fermata!^C2 z2 |] %17
V:4
 z6"Am" A,,B,, |"Am/C" C,2"G#dim/B" B,,A,,"G#dim7" ^G,,2"Am" A,,2 | %2
"Bm7b5/D" D,B,,"E" E,2"Am" !fermata!A,,2"D/F#" ^F,,2 |"G" G,,A,,"G/B" B,,G,,"C" C, C2 B, | %4
"Am" A,G,"F#m" ^F,2"Em" !fermata!E,2"Am" A,,2 |"Bm" B,,2"Am/C" C,D,"E" E,2"F" F,E, | %6
"Bm7b5/D" D,2"E" E,2"Am" !fermata!A,,2"Am" A,,B,, | %7
"Am/C" C,2"G#dim/B" B,,A,,"G#dim7" ^G,,2"Am" A,,2 | %8
"Bm7b5/D" D,B,,"E" E,2"Am" !fermata!A,,2"D/F#" ^F,,2 |"G" G,,A,,"G/B" B,,G,,"C" C, C2 B, | %10
"Am" A,G,"F#m" ^F,2"Em" !fermata!E,2"Am" A,,2 |"Bm" B,,2"Am/C" C,D,"E" E,2"F" F,E, | %12
"Bm7b5/D" D,2"E" E,2"Am" !fermata!A,,2"G" G,F, |"C/E" E,2"Dm" D,2"C" C, C2 B, | %14
"C" CE,"Dm7/F" F,G,"C" !fermata!C,2"C" C,2 |"G/B" B,,G,,"F/A" A,,B,,"C" C,2"Dm" D,2 | %16
"Am/C" C,A,,"Esus4" E,2"A" !fermata!A,,2 z2 |] %17  