Music Theory

Friday, Apr 3, 2026 | 1 minute read | Updated at Friday, Apr 3, 2026

Emmanuel Decena

I’d like to go deeper into guitar playing by learning music theory. This article is my attempt to articulate my learning.

The KEY is the most importance concept in music theory.

What is a major scale? - start with a note then apply the pattern: WWHWWWH The guitar fretboard is just a slice in the matrix of infinite notes.

Why is the musical alphabet it is?

The major scale is used in the mapping of the sounds to the notes just because it is a good reference point for other scales.

You can also move the notes in the major scale up or down the neck consistently.

Twelve notes but only seven tones.

Channels I like:

  • Scott Paul Johnson: Gave a good reasoning and analogy to why learning music theory.

© 2025 - 2026 Blog

All rights reserved

About

I created this blog to monitor my curiosity, writing about concepts that interest me.

I write about personal projects, ideas, and the things I learn along the way. Hand-crafted and LLM-free.

Occasionally, a travel story or food review sneaks in.

If my writing resonates with you, feel free to connect with me at ecdecena [@] gmail.com.

I’m currently based in Cebu City, PH 🏖️.

Disclaimer

The contents on this site reflect my thoughts and opinions only. It does not represent the views of any organization, employer, or institution I am affiliated with.

Social Links