There's this cute website that offers an interactive guide to music theory, so let's check it out together and refresh our fundamentals!

Check out the explorable explanations website yourself ► https://explorabl.es/

My Foundations courses ► https://courses.underdog.brussels
Underdog Mailing List ► http://eepurl.com/gZmNbv
Patreon ►   / underdogmusicschool  
Discord ►   / discord  

Contents:
0:00 Explorable explanations
0:35 Never gonna give you up
0:44 Sound, what is it?
1:38 Harmony
3:25 The pentatonic scale
5:15 The chromatic scale
7:34 Chords
9:10 Major and Minor Keys
10:38 Diatonic chords
13:03 Chord progressions