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Decoder Essential Card Edition + Book

Decoder Essential Card Edition + Book

Regular price $32.00 AUD
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Music theory made easy!

The interactive spin you love about Decoder Circle of Fifths wheel in a card edition. Guide your practice with the 36-page Reading Companion.

Decoder will allow you to play as you learn, and to show you how useful music theory can be; for both new and experienced players of any instrument. 


✓ Decode Music Theory

With Decoder, focus on one key at a time without information overload.

✓ Expose and Analyze Chord Progressions

Check out the selection of 12 common chord progressions on the back to get you playing and applying your new Circle of Fifths knowledge. 

✓ Transpose key with a turn of the wheel

Change key effortlessly and transpose instantly with a turn of the Decoder’s wheel. The clear graphics visually separate major, minor and diminished chords for easy differentiation at a glance.  It is an easy-to-digest, graphical representation of the structures in the music we hear daily. 

✓ Compose your own songs

More than a cheat sheet. It organises keys, chords, notes, and scales according to what they have in common and how good they sound together. 

✓ Reading Companion

Complete with a 36 page booklet packed with examples and handy tips to get you playing straight out of the box. This learning resource will help you become more proficient in using Decoder. It covers a variety of music theories with modern music examples.

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decoder for learning decoder

Most circle of fifths are confusing and cluttered

Decoder Circle of Fifths shows you the key signatures for each key by visually highlighting which notes are flat or sharp AND shows you where they appear in each key's major scale.

We even added in a little extra - the Quick Chords, so that you can see how chords are built up from the notes. This tool simplifies the theory so that you can focus on the fun part -Playing More

essential decoder
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    Stand Edition

    Durable plastic with built-in, optional stand. Complete with Reading Companion.

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  • Essential 12 Pack

    12 Decoder Essentials in one convenient pack. Reading Companion not included. Card material.

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  • learning the circle of fifths

    Teacher's Dozen

    Share your knowledge! Decoder Essential 12 Pack bundled with Decoder + Reading Companion.

    Learn More 
  • decoder essential on grandstand

    Essential Solo

    This Essential flies solo. Reading Companion not included. Card edition. Available in UK only.

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Frequently Asked Questions

Dimensions & Materials

Materials: Polypropylene, nickel press studs.

Dimensions: 146mm x 146mm x 4mm (W x L x D)

Weight: Decoder 45g (0.1lbs) , Book 150g (0.33lbs)

Care Instructions

Wipe with a damp cloth.

Shipping & Returns

In order to make shipping faster and more cost-effective, we will be shipping from locations in the US, UK, and the EU.

Due to the pandemic we are trying our best to ensure our customer receive their product as fast as possible. Upon check out you will review and select which shipping option is best suited for you. All products ship within 24 hours. Please feel free to reach out to us at anytime to check on your order - info@noisyclan.com

What is a Circle of Fifths?

The Circle of Fifths arranges the 12 major keys found in western music, in a circle. Each key is separated by an interval of a 5th - hence the Circle of Fifths! 

How many pages are in the booklet?

Decoder: Circle of Fifths comes with a Reading Companion - a 36 page booklet packed with examples and handy tips to get you playing straight out of the box.

I'm a beginer. Can I use Decoder?

Yes, Decoder: Circle of Fifths and its accompanying reading companion are designed to help musicians of all abilities. As you learn, you can progress through the book and find new ways to apply the circle of fifths to your playing.