Skip to content
The Professor Your AI piano coach. Ask about this lesson, or start a coached session. Open coaching studio
Elementary · Chord Fluency ★★☆☆☆

Diatonic Triads in a Major Key

Seven Chords That Make a Key In E-M1 Lesson 2 you met three chords: C major, F major, and G major. They are the most common chords in C major, but they…

22Minutes
70XP
4Exercises
Level 1-2RCM level

Lesson 1 of 10 in Chord Fluency

Seven Chords That Make a Key In E-M1 Lesson 2 you met three chords: C major, F major, and G major. They are the most common chords in C major, but they are not the only ones. Every major key contains exactly seven triads, one built on each note of the scale. These seven triads are called the diatonic triads..

The full lesson continues with step-by-step practice, worked examples, and the end-of-lesson quiz.

Opens with the 2026 release

Memberships are not open yet. Create a free account to keep your progress, start the free lessons, and hear first when this lesson unlocks.

Get notified at launch

Next Lesson → Memberships are not open yet. Create a free account to keep your progress, start the free lessons, and hear first when this lesson unlocks.