Sagittal notation: Difference between revisions

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'''Sagittal notation''' is a [[musical notation]] system capable of notating almost any conceivable tuning. It was developed by [[Dave Keenan]] and [[George Secor]] with significant contributions from numerous others.

==Flavors of Sagittal notation==

Sagittal notation comes in two mutually compatible ''flavors''.

===Evo===

The '''Evo''' flavor (short for "evolutionary", previously called "mixed") uses only single-shaft Sagittal symbols, e.g. {{sagittal| /| }} {{sagittal| \! }} {{sagittal| |) }} {{sagittal| !) }} , alone or in combination with conventional sharps and flats and their doubles. Only the large variant of the double sharp {{sagittal| x }} (U+E47D) is considered to be stylistically-compatible with Sagittal symbols. Evo is much easier to learn, but it results in a greater number of symbols on the sheet, which can give it a more cluttered appearance, particularly with chords, and it may be confusing when two symbols alter the same note in opposite directions.

<span id="Evo-SZ"></span> A sub-flavor of Evo is '''Evo-SZ''' (Evo with Stein-Zimmermann). This is where the arrow-like [[33/32|11M]] up and down symbols {{sagittal| /|\ }} {{sagittal| \!/ }} are replaced by the Stein-Zimmermann semisharp {{sagittal| > }} and narrow reversed flat {{sagittal| < }} . This should only be done when the 11M symbols notate exactly half the alteration of a sharp or flat. Similarly, the combinations {{sagittal| /|\ }} {{sagittal| # }} and {{sagittal| \!/ }} {{sagittal| b }} are replaced by {{sagittal| ># }} and {{sagittal| <b }}. The narrow variants of the fractional flats {{sagittal| < }} (U+E284) and {{sagittal| <b }} (U+E285) are preferred because they preserve the Sagittal principle that the visual size of a symbol should indicate the relative size of its alteration.

===Revo===

The '''Revo''' flavor (short for "revolutionary", previously called "pure") only requires one accidental per note. Revo therefore takes up less space on the sheet and presents a cleaner appearance, and it clearly indicates the direction of the overall alteration. It discards the conventional sharps and flats and their doubles and replaces them with these multi-shaft arrow-like symbols: {{sagittal| /||\ }} {{sagittal| \!!/ }} {{sagittal| /X\ }} {{sagittal| \Y/ }}. Adding a sharp or flat to a Sagittal is achieved by adding two more shafts, e.g. {{sagittal| /| }} {{sagittal| # }} becomes {{sagittal| /||| }} and {{sagittal| !) }} {{sagittal| b }} becomes {{sagittal| !!!) }}. When the Sagittal part alters in the opposite direction to the sharp or flat part, the rules are not so simple, e.g. {{sagittal| \! }} {{sagittal| # }} becomes {{sagittal| ||\ }} and {{sagittal| |) }} {{sagittal| b }} becomes {{sagittal| !!) }} ; one must simply learn these ''[[2187/2048#Notation|apotome]] complements''.

== Resources ==

@@ Line 3: / Line 3: @@
 '''Sagittal notation''' is a [[musical notation]] system capable of notating almost any conceivable tuning. It was developed by [[Dave Keenan]] and [[George Secor]] with significant contributions from numerous others.
+==Flavors of Sagittal notation==
+Sagittal notation comes in two mutually compatible ''flavors''.
+===Evo===
+The '''Evo''' flavor (short for "evolutionary", previously called "mixed") uses only single-shaft Sagittal symbols, e.g. {{sagittal| /| }} {{sagittal| \! }} {{sagittal| |) }} {{sagittal| !) }}&#x200A;, alone or in combination with conventional sharps and flats and their doubles. Only the large variant of the double sharp {{sagittal| x }} (U+E47D) is considered to be stylistically-compatible with Sagittal symbols. Evo is much easier to learn, but it results in a greater number of symbols on the sheet, which can give it a more cluttered appearance, particularly with chords, and it may be confusing when two symbols alter the same note in opposite directions.
+<span id="Evo-SZ"></span> A sub-flavor of Evo is '''Evo-SZ''' (Evo with Stein-Zimmermann). This is where the arrow-like [[33/32|11M]] up and down symbols {{sagittal| /|\ }} {{sagittal| \!/ }} are replaced by the Stein-Zimmermann semisharp {{sagittal| > }} and narrow reversed flat {{sagittal| < }}&#x200A;. This should only be done when the 11M symbols notate exactly half the alteration of a sharp or flat. Similarly, the combinations {{sagittal| /|\ }}&#x200A;{{sagittal| # }} and {{sagittal| \!/ }}&#x200A;{{sagittal| b }} are replaced by {{sagittal| ># }} and {{sagittal| <b }}. The narrow variants of the fractional flats {{sagittal| < }} (U+E284) and {{sagittal| <b }} (U+E285) are preferred because they preserve the Sagittal principle that the visual size of a symbol should indicate the relative size of its alteration.
+===Revo===
+The '''Revo''' flavor (short for "revolutionary", previously called "pure") only requires one accidental per note. Revo therefore takes up less space on the sheet and presents a cleaner appearance, and it clearly indicates the direction of the overall alteration. It discards the conventional sharps and flats and their doubles and replaces them with these multi-shaft arrow-like symbols: {{sagittal| /||\ }} {{sagittal| \!!/ }} {{sagittal| /X\ }} {{sagittal| \Y/ }}. Adding a sharp or flat to a Sagittal is achieved by adding two more shafts, e.g. {{sagittal| /| }}&#x200A;{{sagittal| # }} becomes {{sagittal| /||| }} and {{sagittal| !) }}&#x200A;{{sagittal| b }} becomes {{sagittal| !!!) }}. When the Sagittal part alters in the opposite direction to the sharp or flat part, the rules are not so simple, e.g. {{sagittal| \! }}&#x200A;{{sagittal| # }} becomes {{sagittal| ||\ }} and {{sagittal| |) }}&#x200A;{{sagittal| b }} becomes {{sagittal| !!) }}&#x200A;; one must simply learn these ''[[2187/2048#Notation|apotome]] complements''.
 == Resources ==