7-Tone Equal Temperament- 7 equal divisions of an octave, starting and ending on A. E2-G2 do not complete an octave.

Reinhard, Johnny. Microtonal Bassoon. Spring 1990?? , p. 85.

E2. 
    Eb
x x x | x x x 
      Bb E

F2.
    Eb Db
x  x  x | x x x
    w       E F#

G2.
x x x | x x x
   w      E


A2. 
x x x | x x o
   w

B2.
   Eb
x x x | x o o
  w      E
   D

C3.
              F# 
x x x | o x x F
   w   Bb E 
   D

D3. 
  Eb Db
x x o | o o o
   w

E3.
x o o | x o o 
  w    Bb E

F3.
o o o | o x o
 c# w

G3.
  Eb Db
x x x | x x x 
   w


A3.
x x x | x x o

B3.
 x x x | x x o Ab
d c     Bb E

C4. 
   Eb
x x x | x x x F
       Bb
   D

D4. 
   Eb
x x o | o o o

E4.
  Eb Db
x o x | x x x

F4. 
    Eb 
o x x | x x x 


 x o x | x x o 
    w 
Bb   
(or Bb B)

G4.
    Eb
x x x | o x x F
   w   Bb


A4.
    Eb
x x x | o o x 
  a c#

B4.
   Eb
x x x | x x o F
  a c# Bb

C5.
x o o | x o o F
d      Bb

D5.
              F#
 o o x | o o x
Bb



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