Develop a composition that showcases the distinctive elements of Bach's musical creations.  
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 g | g g g/a/ _b | a g !fermata!f g | e/d/ c/d/ e ^f | g a !fermata!g g | g g g/a/ _b | %6
 a g !fermata!f g | e/d/ c/d/ e ^f | g a !fermata!g g | c' b a b | c'/b/ a !fermata!g g | %11
 c' g a e/f/ | g f !fermata!e e | d/e/ f e d | A B !fermata!c z |] %15
V:2
 z3 c | d c/B/ c F/G/ | A/>_B/ c !fermata!c d | c G c/B/ A | d/B/ c !fermata!B c | d c/B/ c F/G/ | %6
 A/>_B/ c !fermata!c d | c G c/B/ A | d/B/ c !fermata!B e | e d/e/ ^f f | g d/c/ !fermata!B c | %11
 c c c c | d/e/ A/d/ !fermata!^c =c | d c/d/ e/c/ A | A G !fermata!G z |] %15
V:3
 z6 E2 | D2 EF E2 D2 | CF FE !fermata!A2 G2 | GF ED C2 D2 | D G2 ^F !fermata!G2 E2 | D2 EF E2 D2 | %6
 CF FE !fermata!A2 G2 | GF ED C2 D2 | D G2 ^F !fermata!G2 G2 | GA Bc dc BA | %10
 G2 ^F2 !fermata!D2 E2 | EF G2 F2 CA | GE FA/^G/ !fermata!A2 =G2 | G2 A2 G2 FE | %14
 D4 !fermata!E2 z2 |] %15
V:4
 z6"C" C2 |"G/B" B,2"C/G" G,2"C" C,2"Bb/D" D,E, |"F" F,2"Csus4" C,2"F" !fermata!F,2"G/B" B,,2 | %3
"C" C,3 B,,"Am" A,,B,,"D7/C" C,D, |"G/B" B,,G,,"D7" D,2"G" !fermata!G,,2"C" C2 | %5
"G/B" B,2"C/G" G,2"C" C,2"Bb/D" D,E, |"F" F,2"Csus4" C,2"F" !fermata!F,2"G/B" B,,2 | %7
"C" C,3 B,,"Am" A,,B,,"D7/C" C,D, |"G/B" B,,G,,"D7" D,2"G" !fermata!G,,2"C" CD | %9
"C/E" E^F"G" G2"D" D2"B/D#" ^D2 |"C/E" EC"D" D2"G" !fermata!G,2"C" CB, | %11
"Am" A,G,"Fsus2" F,E,"F" F,G,"Am" A,2 |"G/B" B,^C"Dm" D2"A" !fermata!A,2"C" =C2 | %13
"G/B" B,2"F/A" A,B,"C" C2"Dm/F" F,2 |"D/F#" ^F,2"G" G,2"C" !fermata!C,2 z2 |] %15  