Write a composition that echoes the spirit of Bach's music.  
X:1
T:Music21 Fragment
T:Music21 Fragment
T:Music21
C:Music21
%%score 1 2 3 4
L:1/8
M:4/4
K:C
V:1 treble 
%%MIDI program 0
%%MIDI control 7 100
%%MIDI control 10 64
L:1/4
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
V:4 bass 
%%MIDI program 0
%%MIDI control 7 100
%%MIDI control 10 64
V:1
 A A G c | B/A/ B !fermata!A2 | A/B/ c d c | d e !fermata!c2 | c d e/d/ c | d/c/ B !fermata!A2 | %6
 A A G c | B/A/ B !fermata!A2 |] %8
V:2
 E2 D2 E2 EF/G/ | FE D2 !fermata!C4 | E3 ^F G3 A | B2 cE !fermata!F4 | G2 G2 G^G A2 | %5
 BA ^G2 !fermata!E4 | E2 ^D2 E^F GA | E A2 ^G !fermata!E4 |] %8
V:3
 C2 B,A, B,2 A,2 | A,3 ^G, !fermata!E,4 | CB, A,2 B,2 C2 | F,2 G,A,/_B,/ !fermata!A,4 | %4
 G,2 D2 CB, A,2 | F2 B,E !fermata!C4 | C2 B,A, B,2 E2 | DC B,/C/D !fermata!^C4 |] %8
V:4
"Am" A,G,"Bm7b5/F" F,2"Em" E,D,"Am/C" C,A,, |"Bm7b5/D" D,C,"E7" D,E,"Am" !fermata!A,,4 | %2
"Am" A,,2"Am" A,2"G" =G,=F,"C/E" E,2 |"Bdim/D" D,2"C" C,2"F" !fermata!F,4 | %4
"C/E" E,D,"Csus2" C,B,,"C" C,2"F" F,E, |"Bdim/D" D,2"E" E,2"Am" !fermata!A,,4 | %6
"Am" A,G,"B7/F#" ^F,2"Em" E,D,"C/E" E,F, |"E7/G#" ^G,A,"Esus4" E,2"A" !fermata!A,,4 |] %8  