Harmonic and Melodic Equivalence V14H Two Triad Pair

Harmonic and Melodic Equivalence V14H Two Triad Pair by Bruce Arnold

Part of the Pitch Class Set Improvisation Series

Harmonic and Melodic Equivalence V14H Two Triad Pair is part of a series of books on Pitch Class Set Improvisation called Harmonic and Melodic Equivalence.  The hexatonic scale formed by V14H Trichord Pair is 1, b2, 2, 3, 5, b6 and works over 7 and 7sus4 chords. The usual exercises are included in the course but the most important aspect of this course is the discussion of these topics:

• Examples of how to divide two 3 notes groups rhythmically to form modern sounding melodies.
• How interval vectors inform you about the sound of any group of notes.
• Trichord distribution within the 1, b2, 2, 3, 5, b6 scale.
• All possible types of trichords and triads found in the 1, b2, 2, 3, 5, b6 scale.
• Chord progression ideas using the the 016-026 trichords found in the 1, b2, 2, 3, 5, b6 scale.
• Which chords can work over the C, Db, G and D, E, Ab trichords.
• Understanding the six note compliment to any trichord pair.

All the topics listed above are crucial for developing a deeper understanding of music and how the Harmonic and Melodic Equivalence Series is organized.

Two Trichords

Two 3 note pairs can also be called “two trichords.” Two trichords which unlike a two triad pair are not build in thirds. The term was coined by Milton Babbitt to distinguish a three note collection from a triad built in 3rds. Trichords form a sound that is very useful to a modern improviser both as melodic and harmonic content. Through the Harmonic and Melodic Equivalence Series these trichords are studied in-depth. I think you will find them to be a welcome addition to your improvisational palette.

Harmonic and Melodic Equivalence V14H Two Triad Pair

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Background Information on a Two Triad Pair or Two Trichords

“Harmonic and Melodic Equivalence Trichord Pair” is a series of books that will help you to develop many different musical skills simultaneously. The source materials for this book are exercises that contain two 3 note groupings which are not built in thirds. First a little background, “two triad pairs” consist of two 3 note groupings that are built in 3rds. These combinations typically use a major, minor, diminished or augmented triad and when grouped into a collection of two are called a “two triad pair.”

A trichord pair on the other hand takes any of the 9 other possible 3 note combinations and builds pairs using these pitch class sets. These include 012, 013, 014, 015, 016, 024, 025, 026 and 027. Any three note group can be referred to as a “trichord” but is more commonly used when speaking of a three note grouping not built in thirds. Trichords can also be referred to as non-tertial two triad pairs.

The exercises found in this course use many different types of harmonic and melodic ideas that can be superimposed over common chord progressions, scales and other musical situations. This course concentrates on the 026-016 combinations. An example of that would be C, Db, G and D, E, Ab. It works over 7 and 7sus4 chords and extremely useful for an improvising musician looking for some new fresh sounds. There are also many charts included in this course to show you how these notes function in all 12 keys.

Unique Aspect of These Two Trichord Books

The two trichord books are unique to the Muse Eek Publishing Inc. catalog. The various non-tertial two triad pairs found in this collection are both beautiful and highly applicable to modern improvisation. They work well as a melodic and harmonic device and Mr. Arnold has written a body of work through both recordings, videos and books dedicated to these non-tertial combinations. As with all of Mr. Arnold’s books there is a sharp focus on the ear training and the “Harmonic and Melodic Equivalence Two Trichord” Series is no different.

Each exercise or chart is always relating back to the idea of how you would hear these notes within a key center. This book includes a section where the two trichord pair are put into common chord progressions but more importantly shows you how these progressions relate to the overall key center. Learning music based on how your hear it rather than relating everything to a chord by chord approach is the rosetta stone of music. This is the secret to the previously undecipherable mystery of understanding music from an aural perspective.

Harmonic and Melodic Equivalence Series

This course is part of the Harmonic and Melodic Equivalence Series which explores over 50 different either trichord pairs or two triad pairs. To see all volumes follow the link above to explore each volume and hear examples from each course as well as finding links to compositions that I’ve written using each combination.

Harmonic and Melodic Equivalence Exercises

This course is divided up into two sets of exercises written in treble and bass clef. The 1st set of exercises gets gradually harder but also more musical. Depending upon your musical skills you can start anywhere you want but for beginners I would recommend starting from the 1st exercise of the five. The 2nd set of exercises are called “Atomic Scales.”

These exercises are a technical exercise that really helps you to learn these ideas but also sound great as a melody right off the bat. There are 6 different types of “Atomic Scales” exercises in this course. You don’t have to play every exercise in every key. But doing this will greatly increase the likelihood of you using it in real music in the future. Below is a listing of the exercises found in this course:

• Closed position studies.
• 1st inversion studies.
• 2nd inversion studies.
• Random combinations of closed position along with 1st and 2nd inversion.
• Random combinations of closed position along with 1st and 2nd inversion with rhythmic displacement.
• Atomic Scales Exercise 1
• Atomic Scales Exercise 2
• Atomic Scales Exercise 3
• Atomic Scales Exercise 4
• Atomic Scales Exercise 5
• Atomic Scales Exercise 6

Explanation of 2nd Set of Exercises in Harmonic and Melodic Equivalence V14H Two Triad Pair Course

Below is an explanation for each set of the 6 different atomic scale exercises found in this course. Three octave sequences that move back and forth between the two 3 note groups are presented in six different configurations. These exercises are highly melodic and can be used verbatim as melodies when soloing.

If we thought of the three notes as A,B,C then there would be six different ways to combine these notes. i.e. ABC, ACB, BAC, BCA, CAB and CBA. All exercises include MP3s as well as midi files so that you can hear and play these exercises at any tempo as well as versions in all 12 keys.

• Three octave sequences that move back and forth between the two 3 note groups in the ABC sequence
• Three octave sequences that move back and forth between the two 3 note groups in the ACB sequence
• Three octave sequences that move back and forth between the two 3 note groups in the BAC sequence
• Three octave sequences that move back and forth between the two 3 note groups in the BCA sequence
• Three octave sequences that move back and forth between the two 3 note groups in the CAB sequence
• Three octave sequences that move back and forth between the two 3 note groups in the CBA sequence

1st Set of Exercises in Harmonic and Melodic Equivalence V14H Two Triad Pair Course

Here are a few examples from the 1st set of exercises. A complete list of the different types of exercises can also be found below.

Closed Position Exercise

MP3 example

1st Inversion Exercise

MP3 example

2nd Inversion Exercise

MP3 example

Random combinations of closed position along with 1st and 2nd inversion.

MP3 example

Random combinations of closed position along with 1st and 2nd inversion and rhythm permutation

MP3 example

2nd Set of Exercises in Harmonic and Melodic Equivalence V14H Course

Here are a few examples from the 2nd set of exercises.

Atomic Scales 1st Rotation

MP3 example

Atomic Scales 2nd Rotation

MP3 example

Atomic Scales 3rd Rotation

MP3 example

Atomic Scales 4th Rotation

MP3 example

Atomic Scales 5th Rotation

MP3 example

Atomic Scales 6th Rotation

MP3 example

TOC in the Harmonic and Melodic Equivalence V14H Two Triad Pair Course:

• How to Use This Course
• Harmonic/Melodic Possibilities of 026-016 combination.
• Chord Possibilities of this 026-016 combination
• Two triad pairs rotations Starting on every eighth note
• How to think of these an 026-016 combinations that are used in this course
• The 026-016 combination Daily Exercise-Atomic Scales
• Thinking of these two triad pairs as applications to Modes
• Thinking of these two triad pairs as one scale
• C, Db, G and D, E, Ab as one scale in all keys
• Forming chord progressions with two triad pairs
• Forming extended chord progressions with two triad pairs
• Choosing chord progressions from two triad pairs
• Additional practice ideas

Get Harmonic and Melodic Equivalence V14H Two Triad Pair Today!

Status: In stock, Digital book is available for immediate access.

Additional Information for Harmonic and Melodic Equivalence V14H Two Triad Pair:

• Digital Edition 978-1-59489-275-2
• One 14 page PDF explaining exercises, 5 different types of exercises, 328 pages of exercises in PDF format in treble and bass clef.
• Information and examples of forming extended chord progressions with this two triad pair.
• MP3’s and Midi files for all exercises.
• 12 MP3s from Tuba MetroDrone®

What people are saying:

Thanks for including the information on how to divide up the trichords rhythmically to form modern melodies. I remember you did this in your My Music book way back when. But this really reminded me of the importance that rhythm plays in uses these ideas in music. J. Ogland

Hey Bruce, just wanted to let you know how much I enjoyed the 026-016 series. I can really see know how these two trichords can give you a whole universe of sound that is very useful on many chord types and scales. I now feeling much more conmfortable with the shapes and ready to dig into some more ideas so keep’em coming! J. Deiter

In my opinion this is one of the more important books in the Harmonic and Melodic Equivalence Series. Using two triad pairs or two trichord pairs gives you a cool sound if you just move back and forth in groups of 3 notes.

I’ve found this information all over the internet. What I haven’t found is the rhythm principles that Mr. Arnold discusses in this book. If there is one book to get in this series this is it. If you miss this whole rhythm concept you are really missing out on the beauty of this whole concept in my humble opinion! A. Edgars