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