Write a tune that resonates with the fundamental qualities of Bach's music.  
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
V:1
 z3 A | G D F G | A A !fermata!G A | G D F G | A A !fermata!G A | B c A G | G =F !fermata!E F | %7
 G D F G | A A !fermata!G z |] %9
V:2
 z6 D2 | D C2 B,/^C/ D=C B,2 | E2 DC !fermata!B,2 D2 | D C2 B,/^C/ D=C B,2 | E2 D2 !fermata!D2 F2 | %5
 F3 E2 D D2 | E3 D !fermata!^C2 D=C | B, C2 B,/^C/ D=C B,2 | E2 DC !fermata!B,2 z2 |] %9
V:3
 z3 F, | G, G, A, G, | G, ^F, !fermata!D, =F, | G, G, A, G, | G, ^F,/C/ !fermata!B, C | %5
 D G, A,/4B,/4 C B,/ | C/_B,/ A, !fermata!A, A, | G, G, A, G, | G, ^F, !fermata!D, z |] %9
V:4
 z3"Dm" D, |"Em" E,"Gsus4" G,"Dm" D,"Em" E,/D,/ |"Am7/C" C,"D" D,"G" !fermata!G,,"Dm" D, | %3
"Em" E,"Gsus4" G,"Dm" D,"Em" E,/D,/ |"Am7/C" C,"D" D,"G" !fermata!G,,"F" =F,/E,/ | %5
"Bdim/D" D,"Csus4" C,"F" F,/^F,/"Gsus4" G, |"C" C,/^C,/"Dm" D,"A" !fermata!A,,"Dm" D, | %7
"Em" E,"Gsus4" G,"Dm" D,"Em" E,/D,/ |"Am7/C" C,"D" D,"G" !fermata!G,, z |] %9  