Lesson 19 of 84 · Harmony
⭐ 30 XP🎼 Harmony HallModulation: Changing Keys
Triads are three-note chords: major, minor, diminished, and augmented.
🎯 Your mission
Train your ear to hear what's hiding underneath.
⚡ The twist
Major sounds bright. Minor sounds soft. Both are beautiful.
Listen for this
🎧 Listen for the SECOND voice underneath the main one.
Artist Spotlight
🌟 Brian Wilson of the Beach Boys layered up to 30 voices on a single song.
Mind = Blown
🤯 Your brain can hear an out-of-tune note even if you've never had a music lesson.
Learn about modulation: changing keys: construct major and minor triads
What You'll Learn
Triads are three-note chords: major, minor, diminished, and augmented. Each has a distinct sound and emotional character.
Construct major and minor triads
Identify chord inversions by ear
Notes on the Staff
Tap a note to hear it
Check Your Understanding
Question 1 of 3
What is the main difference between major and minor keys?
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.”
Next Smart Lesson
We'll pick a music lesson that matches exactly where your ear is right now.
Share this music lesson
Send it to a parent who wants 5 minutes of music with their kid — no instrument required.
Checkout complete lesson on Harmony for 4th Grade
Get the full Harmony track as a printable PDF — all lessons, worksheets, and answer keys.