Overview
This lecture introduces the chromatic scale, explains its use of all 12 pitches, and discusses why most music uses smaller subsets of these notes.
The Chromatic Scale
- The chromatic scale consists of 12 pitches, including all note names plus a repeated C an octave higher.
- Each note in the chromatic scale is spaced equally in pitch.
- The chromatic scale includes both the white and black keys on a piano keyboard.
Naming Notes and Sharps/Flats
- Black keys on a piano are named using sharp (#) or flat (b) symbols (e.g., A# or Bb).
- "A/B" notation means the note can be called either A sharp or B flat.
Usage in Music
- Most music does not use all 12 chromatic notes; instead, it selects smaller groups (like the seven notes in major or minor scales).
- The chromatic scale has no central tonic note, making it feel less 'home-like' than other scales.
- Patterns using all 12 notes can sound unusual or "wrong" to listeners accustomed to traditional scales.
Key Terms & Definitions
- Chromatic Scale — A musical scale made up of all 12 pitches within an octave.
- Octave — The interval between one musical pitch and another with double its frequency.
- Tonic — The central or 'home' note in most scales.
- Sharp (#) — Raises a note by a half step.
- Flat (b) — Lowers a note by a half step.
Action Items / Next Steps
- Experiment with writing or playing music using all 12 notes of the chromatic scale.
- Proceed to the "Play with notes and scales" lesson for interactive practice.