Diatonic Extensions: 7ths, 9ths, 11ths & 13ths (Theory for Intermediate Pianists)

Diatonic Extensions: 7ths, 9ths, 11ths & 13ths (Theory for Intermediate Pianists) In this lesson, I break down how to build and use diatonic chord extensions—7ths, 9ths, 11ths, and 13ths—in the key of C major. I cover major 7, minor 7, dominant 7, minor 7 flat 5, sharp 11, and add9 chords, while explaining functional harmony, chord spelling, upper structure triads, and sus chords. Whether you're playing gospel, jazz, or CCM, this is essential theory for intermediate pianists learning how to apply extended harmony musically and correctly. 🎹 Download The Free PDF Guide Click Here: https://pianolessonwithwarren.com/dia... CHAPTERS: 00:00 - Intro & Real-World Use of Sharp 11 Chords 00:43 - What Are Diatonic Extensions? 02:22 - Building Diatonic 7th Chords in C Major 04:10 - Minor 7♭5 vs Half-Diminished Explained 06:09 - Fully Diminished 7th Chords 08:03 - Understanding Diatonic 9th Chords 10:23 - Why the iii Chord Doesn’t Have a Diatonic 9th 11:08 - Building Major 9 and Dominant 9 Chords 12:51 - Diatonic vs Sharp 11: When and Why 14:33 - Upper Structure Triads & Major 9sus4 Voicings 16:15 - Add11 vs 11th Chords Explained 17:37 - The Only Diatonic Sharp 11 Chord 18:56 - Using Sharp 11 in Contemporary Worship Songs 19:39 - Avoiding Clashes with 11ths on Dominant 7s 21:27 - Gospel Piano Example: “This Is the Day” 22:04 - Minor 11th and Cluster Voicings on vi Chord 23:31 - Introduction to Diatonic 13th Chords 25:27 - Diatonic Limits of the iii and vi Chords 27:17 - Final Thoughts on Usage vs Theory 28:08 - PDF Resources & All 12 Keys Available 29:21 - Learn More Inside the Full Gospel Piano Program