Craft a musical composition that encompasses the characteristics and charm of Bach's works.  
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 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
V:1
 z3 C | G G A B | !fermata!c2 z B | c B A A | !fermata!G2 z G | A G F E | !fermata!D2 z E | %7
 C D E/=F/ G | F2 !fermata!E B | c B A A | !fermata!G2 z c | B A G A | G F E/F/ G | F E D2 | %14
 !fermata!C3 z |] %15
V:2
 z3 G, | C C C D | !fermata!E2 z D | A G/C/ E D/C/ | !fermata!B,2 z C | C B, C/G,/ G, | %6
 !fermata!G,2 z B, | B,/ A, G,/ G, C | C/D/4C/4 B, !fermata!C D | E/D/ D E D/C/ | %10
 !fermata!B,2 z E | E C C C | D/ E D =C/ C | C2 C B, | !fermata!G,3 z |] %15
V:3
 z3 E,/F,/ | G,/A,/ _B, A,/G,/ F, | !fermata!G,2 z G, | G,/^F,/ G,2 F, | !fermata!D,2 z G, | %5
 G,/ F, E, D, C,/ | !fermata!B,,2 z E, | E, D, C, G, | A, G, !fermata!G, B, | A, G, G, ^F, | %10
 !fermata!D,2 z A, | A,/ G, F, E,/ E, | B,/A,/ A, A, G, | C,/D,/ E,/C,/ A, G,/F,/ | %14
 !fermata!E,3 z |] %15
V:4
 z3"C" C,/D,/ |"C/E" E,"C7/E" E,"F" F,/E,/"Bdim/D" D, |"C" !fermata!C,2 z"G" G,, | %3
"Am" A,,"Em" E,"Am7/C" C,"D" D, |"G" !fermata!G,,2 z"C/E" E,, | %5
"F" F,,"G" G,,"Fmaj7/A" A,,/B,,/"C" C, |"G" !fermata!G,,2 z"E/G#" ^G,, | %7
"Am" A,,"Bm" B,,"C" C,"C/E" E,, |"Dm7" D,,"G" G,,"C" !fermata!C,,"G" G, | %9
"Am7/G" G,/^F,/"G" G,"Am7/C" C,"D" D, |"G" !fermata!G,,2 z"Am" A,, | %11
"Esus4" E,"F" F,"Csus4" C,"Am" A,, |"G/B" B,,/^C,/"Dm" D,"Asus4" A,,"C/E" E,, | %13
"F/A" A,,"C/G" G,,"Dm7/F" F,,"G" G,, |"C" !fermata!C,,3 z |] %15  