Develop a tune that resonates with the style of Bach's masterpieces.  
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 c | c/d/ e d c | d d !fermata!e c/d/ | e f g/f/ e | d2 !fermata!c c | c/d/ e d c | %6
 d d !fermata!e c/d/ | e f g/f/ e | d2 !fermata!c e | e d c B | c/d/ e !fermata!d d | c B c =G | %12
 c d !fermata!e c/d/ | e f g/f/ e | d2 !fermata!c z |] %15
V:2
 z3 G/F/ | G c B A | A G !fermata!G G | c c d c | c B !fermata!G G/F/ | G c B A | %6
 A G !fermata!G G | c c d c | c B !fermata!G G | G G/F/ E/A/ A/^G/ | A/B/ c !fermata!B B | %11
 B/A/ A/^G/ A E | E A !fermata!^G E | A A G G | A G/F/ !fermata!E z |] %15
V:3
 z3 E/D/ | C G G/F/ E | D/C/ C/B,/ !fermata!C E/F/ | G A G G | A G/F/ !fermata!E E/D/ | %5
 C G G/F/ E | D/C/ C/B,/ !fermata!C E/F/ | G A G G | A G/F/ !fermata!E C | C B, C D | %10
 E/F/ G !fermata!G E | E E E E/D/ | C/B,/ A, !fermata!B, A,/B,/ | C C C C | C B, !fermata!G, z |] %15
V:4
 z3"C" C,/D,/ |"C/E" E,"C/D" D,/C,/"G" G,"Am" A,/G,/ |"Dm/F" F,"Gsus4" G,"C" !fermata!C,"C" C, | %3
"C" C"F/B" B,/A,/"G/B" B,"C" C |"Dm7/F" F,"G" G,"C" !fermata!C,"C" C,/D,/ | %5
"C/E" E,"C/D" D,/C,/"G" G,"Am" A,/G,/ |"Dm/F" F,"Gsus4" G,"C" !fermata!C,"C" C, | %7
"C" C"F/B" B,/A,/"G/B" B,"C" C |"Dm7/F" F,"G" G,"C" !fermata!C,"C" C,/D,/ | %9
"C/E" E,/F,/"G" G,"Am" A,"Bm" B, |"Bm7b5/A" A,"C/E" E,/F,/"G" !fermata!G,"E7/G#" ^G, | %11
"Am" A,"Esus4" E,"Am" A,/B,/"C" C/B,/ |"Am" A,/G,/"Dm/F" F,"E" !fermata!E,"Am" A,, | %13
"Am" A,"F/G" G,/F,/"C/E" E,/D,/"C" C, |"Dm7/F" F,"G" G,"C" !fermata!C, z |] %15  