Johnston–Copper notation: Difference between revisions

continuing to define the notation
reference to Johnson quartet notation
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When the music demands a note to be tuned differently than the 'basis' then special accidentals are used: an altered sharp sign, an altered flat sign, two altered natural signs (up and down) and two neutral signs (up and down).  In Johnston-Copper Notation each such change is exactly a comma, the specific comma indicated by the ratio 81/80 and often called a [[Syntonic comma]] .
When the music demands a note to be tuned differently than the 'basis' then special accidentals are used: an altered sharp sign, an altered flat sign, two altered natural signs (up and down) and two neutral signs (up and down).  In Johnston-Copper Notation each such change is exactly a comma, the specific comma indicated by the ratio 81/80 and often called a [[Syntonic comma]] .
An example from Johnston shows the use of a form of a 'neutral' sign.  [[Johnston Quartet 4 -01]]