Construct a musical work that imitates the style of Bach's compositions.  
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
L:1/8
V:3 bass 
%%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
L:1/8
V:1
 z3 C | G G/F/ E D | E ^F !fermata!G G | E G F G | E D !fermata!C G | A A E G | F F !fermata!E =c | %7
 B A G3/2 A/ | F/E/ D !fermata!C z |] %9
V:2
 z6 G,2 | CD E D2 C2 B, | CB, A,2 !fermata!B,2 D2 | DC D E2 D/C/ D2 | D C2 B, !fermata!G,2 C2 | %5
 C2 C2 G,3 E | ED/^C/ D3 !fermata!C E2 | ED CD ED C2 | C3 B, !fermata!G,2 z2 |] %9
V:3
 z3 E,/F,/ | G,/A,/ B, G, G, | G, D, !fermata!D, G, | G,3/2 B,/ C/A,/ G, | %4
 G, G,/F,/ !fermata!E, E, | F, C,/D,/ E, C/_B,/ | A, A, !fermata!A, A, | G, A,/B,/ C E, | %8
 F,3/2 G,/4F,/4 !fermata!E, z |] %9
V:4
 z6"C" C,D, |"C/E" E,F,"Em/G" G,2"C" C,2"Gsus4" G,,2 |"C" C,2"D" D,2"G" !fermata!G,,2"G/B" B,,2 | %3
"C" C,2"G/B" B,,G,,"Fmaj7/A" A,,D,"G/B" B,,G,, |"C" C,2"Gsus4" G,,2"C" !fermata!C,,2"C" C,2 | %5
"F" F,,G,,"Am" A,,B,,"C" C,D,"C/E" E,^C, |"Dm/E" D,E,"Dm/F" F,G,"Asus4" !fermata!A,2"Am" A,,2 | %7
"Em" E,2"F" F,2"C" C,B,,"Am7" A,,2 |"Dm9" D,2"Gm" G,,2"C" !fermata!C,2 z2 |] %9  