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Music Theory Essentials in 30 Minutes

May 14, 2025

Andrew Huang's Music Theory Crash Course

Introduction

  • Goal: Complete walkthrough of basic music theory in 30 minutes.
  • Context: Bonus content for Andrew's online music production class.
  • Music theory is described as the language behind music, aiding in understanding, interpreting, and communicating about music.
  • Emphasis on practical usage: Once integrated into your practice, music theory acts like a superpower.

Basics of Music Theory

What is a Note?

  • Sound: Made up of vibrations; interpreted by ears/brains.
    • Faster vibrations = higher pitch.
    • Slower vibrations = lower pitch.
  • Consistent Pitch: Perceived as a note.
  • 12 Notes: Common in popular music; named in relation to a piano keyboard.
    • White keys: Named A-G.
    • Black keys: Named using sharp (higher) and flat (lower).

Octaves and Intervals

  • Octave: Distance of 12 notes up or down to the next identically named note.
  • Semitone (Half-Step): Smallest interval between notes.
  • Whole Step (Whole Tone): Two semitones.

Keys and Scales

  • Key: Group of notes that sound good together.
  • Scale: Set of notes played in conjunction with a key.
  • C Major Scale: Uses all white notes.
    • Formula: Whole, Whole, Half, Whole, Whole, Whole, Half.
  • Major Scale Degrees: Number the notes starting from the root.

Exercises

  • Apply the major scale formula to different notes.
  • Practice identifying notes with absolute names and numbered scale degrees.

Chords

Basics of Chords

  • Chords: Multiple notes played simultaneously.
    • Common chords: 3 notes (root, third, fifth) forming triads.
  • Major and Minor Chords:
    • Major: Happy sound, formula: 4 semitones, then 3.
    • Minor: Sad sound, formula: 3 semitones, then 4.

Relative Minor

  • Every major scale has a relative minor starting on the 6th degree.

Triads and Chord Progressions

  • Triads: Construction based on the 1st through 6th degrees of a scale.
  • Numbering System: Using Roman numerals.
    • Capital letters for major chords, lowercase for minor.
  • Common progressions: e.g., 1-5-6-4.

Exercises

  • Create triads from different major scales.
  • Practice naming chords both by root note and type (major/minor).

Inversions and Chord Variation

Inversions

  • Inversions: Changing position of notes so the root isn’t the lowest.
  • Create smoother transitions between chords.

Practice

  • Create progressions, using inversions to keep notes closer together.

Melodies

Creating Melodies

  • Melody: Single sequence of notes over chords.
  • Use notes in the key, experimenting with tension and stability.
  • Major Pentatonic Scale: Remove 4th and 7th degrees for a simplified melody.

Exercise

  • Pick a key, create a chord progression, and overlay melodies.

Rhythm

Counting and Rhythm

  • Bars/Measures: Typically four beats per measure in Western music.
  • Note length: Whole, half, quarter, eighth, sixteenth notes.
  • Subdividing beats:
    • 1, 2, 3, 4 for quarters.
    • 1 and 2 and for eighths.
    • 1-e-and-a 2-e-and-a for sixteenths.

Practice

  • Use rhythmic notation to jot down musical ideas.

Conclusion

  • Music theory as a crucial tool for music creation, interpretation, and learning.
  • Encouragement to practice exercises and review material.
  • Invitation to Andrew's full online music production course.