Compose a harmonious piece infused with Bach's iconic 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 nm="Piano" snm="Pno"
%%MIDI program 0
%%MIDI control 7 100
%%MIDI control 10 64
V:2 treble nm="Piano" snm="Pno"
%%MIDI channel 3
%%MIDI program 0
%%MIDI control 7 100
%%MIDI control 10 64
V:3 treble nm="Piano" snm="Pno"
%%MIDI channel 4
%%MIDI program 0
%%MIDI control 7 100
%%MIDI control 10 64
V:4 bass nm="Piano" snm="Pno"
%%MIDI channel 5
%%MIDI program 0
%%MIDI control 7 100
%%MIDI control 10 64
V:1
 c c d c | d/e/ f f e | !fermata!f2 g a | !fermata!f2 e/f/ g | !fermata!d2 g g | f e/d/ d2 | %6
 !fermata!c2 c c | d c d/e/ f | f e !fermata!f2 | g a !fermata!f2 | e/f/ g !fermata!d2 | %11
 g g f e/d/ | d2 !fermata!c2 |] %13
V:2
 G A G G | A _B c2 | !fermata!c2 e/d/ e | !fermata!d2 c c | !fermata!B2 B c | c c c B | %6
 !fermata!G2 A E/^F/ | G/=F/ E F/G/ F/G/ | A G !fermata!F2 | B ^c !fermata!A2 | %10
 =c B/c/ !fermata!d2 | c c/B/ c/d/ G/A/ | B/ c B/ !fermata!G2 |] %13
V:3
 E F B, C | F F/G/ A G | !fermata!A2 c/_B/ A | !fermata!A2 A G | !fermata!G2 D E | F G A G/F/ | %6
 !fermata!E2 F C | B, C C/_B,/ C/D/ | C A !fermata!A2 | G/F/ E !fermata!D2 | %10
 C/D/ E/C/ !fermata!G2 | E/F/ G A/B/ c | G/F/4E/4 F !fermata!E2 |] %13
V:4
"C" C"F" F,"G7/F" F,"C/E" E, |"Dm" D,"Bbm/Db" _D,"F/C" C,2 |"F" !fermata!F,2"C" C"A/C#" ^C | %3
"Dm" !fermata!D2"Am" A,"C/E" E,/F,/ |"G" !fermata!G,2"G" G,"C" C/B,/ | %5
"F/A" A,"C/G" G,"Dm7/F" F,"G" G, |"C" !fermata!C,2"F" F,/G,/"Am" A, | %7
"G" G,/A,/"Bbm" _B,"Dm7/A" A,/G,/"F/A" A,/=B,/ |"F/C" C"A7/C#" ^C"Dm" !fermata!D2 | %9
"Em" E"A" A,"Dm" !fermata!D2 |"Am" A,"Em/G" G,/A,/"G/B" !fermata!B,2 | %11
"C" C/D/"C/E" E"Fmaj7/E" E/D/"C/E" E/F/ |"G" G"G7" G,"C" !fermata!C,2 |] %13  