You're going to. Oh, Welcome to the guitar music theory

podcast. I'm Desi Cerna, author of Frontboard Theory, Guitar Picking Mechanics, Guitar Theory for Dummies, and more.

This podcast features free guitar lessons that focus on music theory for guitar, including guitar scales, chords,

progressions, modes, composition techniques,

improvisation, and more.

The lessons are geared toward intermediate level players on up.

You can follow along on either an acoustic or electric guitar.

Bass players can take away a lot from the lessons too. Today's podcast episode is a previous recording in which you look at several related topics including modulation, key changes,

modal interchange, borrowed chords, and the circle of this.

This lesson is based on my book,

Freeport Theory volume 2, chapter 4. You're going to. Hi, this is Desi Cerna. In music, we usually think of a song as having a main tonic chord or pitch,

and also a main parent major scale, the scale that the chords and the chord progression is drawn from.

Many songs, however, will actually change.

They'll either change their tonic pitch or chord, or they may change the scale that they're drawn from or both.

So we're going to talk about different ways that songs would change keys or change tonics and hopefully this will help

you understand music that doesn't always neatly fit into one key or more

specifically doesn't always fit into the major scale chord patterns that I teach in the first volume of fretboard theory.

And to begin, I'm going to talk about how a song would change tonics.

This isn't too hard to track because when a song changes tonics it stays in the same parent

major scale using the same scale and chords but it just switches its focus from

one chord to another.

And often you hear this done between the relative major

...