Learn music theory in half an hour

Date: 2021-07-21 14:29:42 +08:00Date modified: 2021-11-07 18:34:30 +08:00

sounds are vibrations of air just repeated quickly in a short period of time
for the sake of easily referring to the sounds, we name them; the commonly agreed number of notes are 12 composing of an octave;
scales are the flavor of the song; certain genres are often written in some scales (e.g., blues are often written in Emaj)
major scales; WWhWWWh
minor scales; WWWhWWh

Exercises

practice applying the major scale for 5
- D E Fb G A B C# D
- E# G A A# C D E E#
- A# C D D# F G A A#
- G A B C D E F# G
- C D E F G A B C
- A B C# D E F# G# A
practice getting familiar with their letter names
- assuming A# is the root of the major scale
  - A# is the first
  - C is the second of A#maj
  - D# is the fourth of A#maj
  - D is the third
  - G is the sixth of A#maj
practice making triads from first through sixth degrees of a major scale
- G major scale:
  - G B D = Gmaj
  - A C E = Amin
  - B D F# = Bmin
  - C E G = Cmaj
  - D F# A = Dmaj
  - E G B = Emin
  - F# A C = F#dim
- A major scale:
  - A C# E = Amaj
  - B D F# = Bmin
  - C# E G# = C#min
  - D F# A = Dmaj
  - E G# B = Emaj
  - F# A C# = F#min
  - G# B D = G#dim
- C major scale:
  - C E G = Cmaj
  - D F A = Dmin
  - E G B = Emin
  - F A C = Fmaj
  - G B D = Gmaj
  - A C E = Amin
  - B D F = Bdim
each of them has a certain pattern: maj, min, min, maj, maj, min, dim
practice making chord progressions with numbers
- 1 4 2 5 in G and A key
- 4 2 1 1 6 in E
- 3 1 4 in C