vault backup: 2026-01-20 17:02:44

music-theory.md

@@ -54,9 +54,11 @@ In equal temperament tuning, all pitch classes are---
 according to human perception---equally spaced.
 There is no missing half between E and F or B and C,
 because there are no halves at all.
-C# is as legitimate a pitch class as C,
-and in some disciplines, accidentals are marked on every note,
-even "redundantly", in acknowledgement of this fact.
+C# is as legitimate a pitch class as C.
+
+> [!info]
+> In some disciplines, accidentals are marked on every note,
+> even "redundantly", in acknowledgement of this fact.
 
 What is meant by the poor terminology is this:
 
@@ -86,7 +88,7 @@ which is a [[ambiguity#Category Mistake|category mistake]].
 | ----- | ------- | -------- | ------------ |
 | bb    | 𝄫       | eses     | double flat  |
 | b     | ♭       | es       | flat         |
-|       | ♮       |          | natural      |
+|       | ♮       | !        | natural      |
 | #     | ♯       | is       | sharp        |
 | x     | 𝄪       | isis     | double sharp |
 
@@ -146,7 +148,7 @@ The common intervals
 | 6      | 11     | M7    | Major seventh  |
 | 7      | 12     | P8    | Perfect octave |
 
-[^1]: difference in staff position (interval number)
+[^1]: difference in staff position (interval number - 1)
 [^2]: difference in semitones
 
 #### Augmented and Diminished Intervals
@@ -178,22 +180,22 @@ A **key** is a [[set-theory|set]] of pitch classes
 created by modifying a starting pitch class (the **tonic**)
 according to some sequence of intervals.
 
-| Key           | Interval Sequence |
-| ------------- |:-----------------:|
-| Major         |   W--W--H--W--W--W--H   |
-| Natural Minor |   W--H--W--W--H--W--W   |
+| Key           |  Interval Sequence  |
+| ------------- |:-------------------:|
+| Major         | W--W--H--W--W--W--H |
+| Natural Minor | W--H--W--W--H--W--W |
 
 ### Modes
 
-| Mode       | Interval Sequence |
-| ---------- |:-----------------:|
-| Ionian     |   W--W--H--W--W--W--H   |
-| Dorian     |   W--H--W--W--W--H--W   |
-| Phrygian   |   H--W--W--W--H--W--W   |
-| Lydian     |   W--W--W--H--W--W--H   |
-| Mixolydian |   W--W--H--W--W--H--W   |
-| Aeolian    |   W--H--W--W--H--W--W   |
-| Locrian    |   H--W--W--H--W--W--W   |
+| Mode       |  Interval Sequence  |
+| ---------- |:-------------------:|
+| Ionian     | W--W--H--W--W--W--H |
+| Dorian     | W--H--W--W--W--H--W |
+| Phrygian   | H--W--W--W--H--W--W |
+| Lydian     | W--W--W--H--W--W--H |
+| Mixolydian | W--W--H--W--W--H--W |
+| Aeolian    | W--H--W--W--H--W--W |
+| Locrian    | H--W--W--H--W--W--W |
 
 ### Scale