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78 lines
1.9 KiB
Org Mode
78 lines
1.9 KiB
Org Mode
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:PROPERTIES:
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:ID: 564b829b-8c8f-4d4d-85f2-5125892de83a
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:roam_refs: @andrewhuangLearnMusicTheory
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:END:
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#+title: Learn music theory in half an hour
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#+date: 2021-07-21 14:29:42 +08:00
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#+date_modified: 2021-11-07 18:34:30 +08:00
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#+language: en
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#+source: https://youtu.be/rgaTLrZGlk0
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- sounds are vibrations of air just repeated quickly in a short period of time
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- for the sake of easily referring to the sounds, we name them;
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*the commonly agreed number of notes are 12 composing of an octave*;
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- scales are the flavor of the song;
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certain genres are often written in some scales (e.g., blues are often written in Emaj)
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- major scales; WWhWWWh
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- minor scales; WWWhWWh
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-
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* Exercises
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- practice applying the major scale for 5
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+ D E Fb G A B C# D
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+ E# G A A# C D E E# [fn:: Yes, this is just F. It's still a nice exercise sample, though.]
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+ A# C D D# F G A A#
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+ G A B C D E F# G
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+ C D E F G A B C
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+ A B C# D E F# G# A
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- practice getting familiar with their letter names
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+ assuming A# is the root of the major scale
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- A# is the first
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- C is the second of A#maj
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- D# is the fourth of A#maj
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- D is the third
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- G is the sixth of A#maj
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- practice making triads from first through sixth degrees of a major scale
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+ G major scale:
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- G B D = Gmaj
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- A C E = Amin
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- B D F# = Bmin
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- C E G = Cmaj
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- D F# A = Dmaj
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- E G B = Emin
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- F# A C = F#dim
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+ A major scale:
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- A C# E = Amaj
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- B D F# = Bmin
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- C# E G# = C#min
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- D F# A = Dmaj
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- E G# B = Emaj
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- F# A C# = F#min
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- G# B D = G#dim
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+ C major scale:
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- C E G = Cmaj
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- D F A = Dmin
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- E G B = Emin
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- F A C = Fmaj
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- G B D = Gmaj
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- A C E = Amin
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- B D F = Bdim
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- each of them has a certain pattern: maj, min, min, maj, maj, min, dim
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- practice making chord progressions with numbers
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+ 1 4 2 5 in G and A key
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+ 4 2 1 1 6 in E
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+ 3 1 4 in C
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#+begin_src lilypond :file chord-progressions.png
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#+end_src
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