* https://github.com/pedrozath/coltrane# LearN
    * https://news.ycombinator.com/item?id=35092929#
  * https://www.jefftk.com/p/what-is-a-major-chord#
  * https://eev.ee/blog/2016/09/15/music-theory-for-nerds/#


{{https://qmgear.com/wp-content/uploads/2021/04/b1.jpg}}

{{https://svpwiki.com/imagesCOS/sound_colors2.gif}}


{{https://www.guitarscientist.com/generator/pic/expimg/92fqkeldOmCis3W.png}}

  * https://www.spirit-science.fr/doc_musique/Intonation.html



<code>

# METHOD 							               #

## FRETBOARD ##

    0  :1:   2   :3:   4   :5:   6   :7:   8   :9:   10   11    :12:
    
    g||-G#-|-A--|-A#-|-B--|-C--|-C#-|-D--|-D#-|-E--|-F--|-F#-| |-G--|
    D||-D#-|-E--|-F--|-F#-|-G--|-G#-|-A--|-A#-|-B--|-C--|-C#-| |-D--|
    A||-A#-|-B--|-C--|-C#-|-D--|-D#-|-E--|-F--|-F#-|-G--|-G#-| |-A--|
    E||-F--|-F#-|-G--|-G#-|-A--|-A#-|-B--|-C--|-C#-|-D--|-D#-| |-E--|

    0   :1:  2   :3:   4   :5:   6   :7:   8   :9:   10   11    :12:

## SCALE ##

E string : E F E A# A G E F E


      :: 1...+...2...+...3...+...4...+... : 1...+...2...+...3...+...4...+... ::
    g ||----------------------------------|----------------------------------||
    D ||----------------------------------|----------------------------------||
    A ||----------------------------------|----------------------------------||
    E ||----------------------------------|----------------------------------||

      Hz 82                 110          147
         E   F   F#  G   G#  A   A#  B    C   C#  D   D#   E   F   F#  G
    g ||-------------------------------------------------|----------0---1---||
    D ||-----------------------------------------0---1---|-2----3---5---6---||
    A ||---------------------0---1---2---3---4---5---6---|-7----8---9--10---||
    E ||-0---1---2---3---4---5---6---7---8---9---10--11--|-12--13--14--15---||

</code>

  * https://www.yewtu.be/watch?v=hWOWDiJHNm0#
  * https://www.yewtu.be/watch?v=AGgbq5BXC8A#
  * https://www.amazon.com/stores/Nature%27s+Melody/page/C4E575F6-CFD8-4B60-AF69-5A66D5571C90?ref_=rzr-21## PentaB
  * https://www.harmonia-eolyre.fr/eolyre# Eolyre T2 432Hz

HarmonY

  * https://en.wikipedia.org/wiki/A_(musical_note)
  * https://en.wikipedia.org/wiki/Scientific_pitch
  * https://en.wikipedia.org/wiki/Just_intonation#
  * https://github.com/alexcrist/scaler#

  * https://hackaday.io/project/11284-midi-hi-lites# ColoR

Theory:

  * https://fr.m.wikisource.org/wiki/Th%C3%A9orie_de_la_musique_(Danhauser,_1889)/Texte_entier

  * https://www.amazon.fr/Abr%C3%A9g%C3%A9-th%C3%A9orie-musique/dp/B003B1E5B0/ref=rzr21#


===== CHIME =====

  * https://youtu.be/nUijWYuJnAk?t=15 : ScalE: C D Eb F G A Bb C 
    * https://en.wikipedia.org/wiki/Gregorian_mode

  * https://barcodeindex.com/upc/810812020833# AT28BK
    * https://www.findthisbest.com/best-wind-chimes/musical#  Choose 28, 36 or 42 Inches 

  * PentA E : E #F #G B #C E 

{{https://cdn.manomano.com/images/images_products/26468304/L/62342766_1.jpg}}


===== MORE =====

  * https://fretastic.com/guitar# LearN ScalE