Lesson 48 of 84 · Harmony Introduction

⭐ 30 XP🎼 Harmony Hall

Jazz Chord Extensions (Part 2)

🎵Stage Brief #48

Quartal harmony stacks fourths instead of thirds (C-F-B-flat).

🎯 Your mission

Stack the sound. Find the sweet spot.

⚡ The twist

If your ears think it sounds 'off' — that's the harmony asking to resolve.

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Listen for this

🎧 Listen for the SECOND voice underneath the main one.

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Artist Spotlight

🌟 The Beatles' three-part harmonies were so tight they sounded like one voice.

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Mind = Blown

🤯 Your brain can hear an out-of-tune note even if you've never had a music lesson.

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?

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Where you hear this in real life

The reason songs make you feel things is harmony doing its quiet job underneath.

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Stretch Challenge

Try this in real life this week.

Sing any note. Then sing one that goes WITH it. What does it feel like together?

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For the dinner table

“Play one song together. Talk about what feeling it gave you and why.”

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