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Hello and welcome. 
In this episode, we will be 

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looking at some practical uses 
for model interchange. 

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First of all, what is it? 
This is a technique that 

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consists in temporarily 
borrowing chords from a parallel

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tonality or mode that shares the
same route without abandoning 

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the established key using this 
technique is a great way of a of

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adding color and variety to 
chord progressions. 

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You can look at it as a way of 
working with temporary 

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modulations that introduce 
chromaticism from parallel, 

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tonalities to the tonic Center 
you are working on. 

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And once we have established the
tunnel or model centers that we 

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will be using, we will know 
which cord and pitches are 

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available to us and use those 
mind you that if any of these 

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Concepts sound unfamiliar to 
you, check out the links in the 

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description that will Thank you 
to the appropriate blog entry. 

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And with no further Ado, here is
a melody in f mixolydian from 

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the B-flat, major key Center and
with borrowed cards from F 

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aeolian, in the key center of a 
flat major. 

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You can also start with a Melody
that uses speeches from the 

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keys. 
You choose to use for modal. 

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Interchange automatically, you 
may be defining the places where

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the borrowed cards will be used.
Here is an example, first the 

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melody. 
And then with the chords, 

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Notice how you could already 
tell where the borrowed cards 

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would come in, but remember 
that, as long as the borrowed 

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chord accommodates, the melodic 
gesture, you don't necessarily 

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need to change the notes in the 
melody. 

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In this example, you will hear 
that the melody stays in the 

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same. 
Key in C, Dorian, while I'm 

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using borrowed cards. 
Although the most commonly used 

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borrowed cards, originated from 
the major and or minor parallel 

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modes like C major and C minor 
including the respective 

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harmonic and melodic minor as 
well as the symmetrical scale 

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sharing the same root. 
There is no reason to limit 

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yourself to these since the 
premise is that model 

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interchange can occur with any 
mode that shares the same route.

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For instance, it Dorian and E 
major 

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Another thing to consider with 
borrowed chords is to use them 

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as passage or link between two 
diatonic chords. 

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In this case we will be using an
A flat major chord from the 

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parallel key of C minor as a 
passage between F major and G. 

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Major chords from the C major 
tonality Going from one parallel

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mode to another may be 
accomplished by directly 

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introducing. 
The borrowed chord in the chord 

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progression by using common 
pitches. 

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Shared between the respective 
parallel modes and using Court 

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transformation to smooth the 
process of modal interchange. 

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in some model interchange chords
can be used in different ways, 

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such as adding color by 
introducing chromaticism, in 

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their Harmony and or Melody as a
tool for reharmonization as 

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pivot chords for modulation or 
as a link between two diatonic 

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chords, remember that when using
this technique it is important 

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to make sure that the original 
key is clearly established 

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before and after using borrowed 
chords Since we are working with

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temporary modulations, you can 
use the thought process in 

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materials involved in the model 
interchange approach to make 

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definite modulations, although 
technically it is no longer 

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model. 
Interchange per se, you are only

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modulating to a different key. 
I hope that this technique opens

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up other harmonic and melodic 
possibilities for you to explore

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in your music, experiment with 
it, and find your own ways of 

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using this technique. 
It's all for now and I'll see 

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you on the next episode. 
Happy composing. 

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It's all for now and I'll see 
you on the next episode. 

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Happy composing.