Lesson 48 of 84 · Harmony
⭐ 30 XP🎼 Harmony HallJazz Chord Extensions (Part 2)
Quartal harmony stacks fourths instead of thirds (C-F-B-flat).
🎯 Your mission
Stack the sound. Find the sweet spot.
⚡ The twist
Some chords feel like a question. Others feel like an answer.
Listen for this
🎧 Pick out the lowest note. That's the bass — the foundation.
Artist Spotlight
🌟 The Beatles' three-part harmonies were so tight they sounded like one voice.
Mind = Blown
🤯 Some cultures use scales with 22 notes — way more than the 7 you know.
Learn about jazz chord extensions (part 2): compare harmonic styles across genres
What You'll Learn
Quartal harmony stacks fourths instead of thirds (C-F-B-flat). It has an open, modern sound used in jazz and film.
Compare harmonic styles across genres
Use harmonic analysis to understand a piece
Notes on the Staff
Tap a note to hear it
Check Your Understanding
Question 1 of 3
What is an interval?
Where you hear this in real life
The reason songs make you feel things is harmony doing its quiet job underneath.
Stretch Challenge
Try this in real life this week.
Listen to any song. Try to hear the bass line.
For the dinner table
“Play one song together. Talk about what feeling it gave you and why.”
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Jazz Chord Extensions (Part 2)
Stack the sound. Find the sweet spot.
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