C, D and G aren't the same. All the notes have jobs. A purpose. And this allows us to articulate musical phrases with grammar and semantics. Here I explain!

Vídeo on Scales:    • Qué es una ESCALA MUSICAL. La Explica...  
Vídeo on Intervals:    • Qué es un INTERVALO MUSICAL. La Expli...  
Vídeo on Chords:    • Qué es un ACORDE. Tipos de Acordes. L...  

Four things:

There are 800 ways to look at this, through the lens of history, or talking about "Do" as the first note of any scale instead of one of the 12 notes of equal temperament (the same thing as C), or whatever. I've chosen this one because it's the way I wish someone had explained it to me.

Not all music can be described in terms of functional harmony (that is, harmony in which each chord has a "function" like in this video). But it's the most common and important framework there is.

I realise that the V I put over the Bach prelude could perhaps be better analysed as a VII with a tonic pedal tone, but at the end of the day it has a dominant function and it's a very good example to illustrate the IIVVI because everybody knows it. I don't know how much hate I'll get for this, haha.

Speaking of functions, I didn't talk about the II as having a subdominant function. If anyone reads this, know that the I IV V I has another very common and similar version, the I II V I. If you look at what notes make up the II chord you'll see why it works as "another chord with some tension, but not too much".

If you want to help me keep on creating videos that help you understand music in another way, you can become a Rider of the Kingdom, a Wise Cousellor, or a member of the Night Watch, each with different benefits, like choosing what one of my videos per month is about, and exclusive live streams.
All that here:   / jaimealtozano  

TRANSLATOR'S NOTE: I've translated the note names, because in English the similarlooking syllables "Do Re Mi Fa So La Ti Do" aren't really nnote names at all. They belong to the "moveable Do" system designed for ear training and solmisation, so "Do" refers to whatever note is the tonic of the scale you are working in, not necessarily C. That means there's no such thing as Fa♯ or Mi♭ in English, it would be nonsense. In Spanish, Do means C and only C. Unfortunately this means the captions don't fit with the graphics, but everyone who's curious enough about music to have to find out how other people do it, has to get their head around that, at some point. We might as well face up to it now.

SOCIAL MEDIA
Twitter:   / jaimealtozano  
Instagram:   / jaimealtozano  
Facebook:   / jaimealtozanopagina  
Website: http://www.jaimealtozano.com

The music I use in this video:

–Of course, I used music by Piglet Spacey, from their album Trino which you can buy at Bandcamp here:
https://pigletspacey.bandcamp.com/alb...

–Divider by Chris Zabriskie has a CC with Attribution license:
https://creativecommons.org/licenses/...
The record: http://chriszabriskie.com/divider/'>http://chriszabriskie.com/divider/
The artist: http://chriszabriskie.com/