Accordions and The Circle of Fifths

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Circle of Fifths

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While many accordionists learn to play their first tunes by ear, grasping basic concepts of music theory early is quite important. Mainly because learning to play chords, notes, and pitches correctly from the get-go and not relying on improvisation will enable you to become an excellent musician in the future.

What is the circle of fifths?

The circle of fifths is a diagram that represents the relationships among the 12 tones of the chromatic scale, their corresponding key signatures, and the associated major and minor keys. The circle of fifths is a useful tool for understanding key relationships and for composing and improvising music.

Each circle on the circle is arranged the fifth interval away from the next one on the circle, hence the name. The circle of fifths arranges musical keys by the number of accidentals in their key signatures.

Starting from the top of the circle and moving clockwise, the keys are arranged in a sequence of fifths. For example, the key of C is followed by G, D, A, E, B, and so on. This sequence reflects the fact that the distance between each key in the circle of fifths is a perfect fifth interval.

Video courtesy of Mike George


Circle of Fifths lets us visualize the relationship amongst the twelve tones of the chromatic scale, major and minor keys, and their corresponding key signatures. This visual tool is designed for beginners and intermediate musicians to help them grasp and memorize the key signatures and chord changes.

Who is the circle of fifths for?

The circle of fifths visual tool is for everyone who wants to have a good understanding of music theory fundamentals. Regardless of your skill level, going back to the circle of fifths graph for visual cues throughout your musical career is a very common practice amongst musicians of all levels.

Novice musicians and accordionists may have a hard time grasping the Circle of Fifths concept initially, and that is ok.

Understanding music theory can be intimidating, but the circle of fifths unlocks its mysteries and brings it within reach. This powerful tool is instrumental in helping guitarists and other instrument players comprehend how chords, scales, and keys all connect.

Seeing this connection represented visually – as on a circular diagram such as the circle of fifths — helps musicians quickly identify patterns in compositions so they are easier to recall. Having access to these insights makes learning any musical instrument more enjoyable – something that’s been made possible with the help of this influential aid!

Circle of Fifths Poster for musicians

Circle of 1/5ths Visual Aid

One of the most popular Circle of Fifths visual aids on the market

  • The Circle of Fifths Wheel Poster displays the Most Essential and Practical Applications of Chord Theory for the accordion.
  • Great for visual learners and practice rooms.

The circle of Fifths and the accordion

The circle of fifths can be used on an accordion to understand key relationships and to aid in composing and improvising music. This can be particularly beneficial to beginner accordionists.

The accordion is a versatile instrument that can play music in any key, and the circle of fifths can be a helpful reference for understanding the relationships between different keys and for building chord progressions.

To use the circle of fifths on an accordion, you can follow the same principles as you would on any other instrument. For example, you can use the circle of fifths to understand how different keys are related to each other, and how the chords in each key are constructed.

You can also use the circle of fifths to help you improvise and compose music, by using it as a guide to move between different keys and build chord progressions.

This textbook should be in every musician’s arsenal. It was written by an engineer and physicist Philip Jackson who understands logic and applied science well. He used a scientific approach to convey music theory to laymen and professional musicians in a language that is easy to understand.


Coming back to it over time and eventually memorizing it, will help them master the instrument and melodies for life.

The Stradella Bass system and the circle of fifths

The Stradella system is named after the Italian town of Stradella, where it was developed in the 19th century. It is the most common bass system used on accordions and is named after the town of Stradella, Italy where it was developed in the 19th century.

The Stradella bass system consists of rows of buttons on the left-hand side of the accordion. Each row represents a different chord. The Stradella bass system became a scientific term referring to the layout of bass buttons on the accordion.

These buttons (left-hand side of a piano accordion) are laid out in columns which are arranged in a circle of fifths.

If you are an accordionist who is looking for a brilliant reference book on the circle of fifths for the accordion, this could be your best bet. This is a fun, easy-to-read textbook that also comes with pictorials and exercises that will help you master the circle of fifths on your accordion. Written by Arleen J. Watkins, a professional accordionist and music teacher from Pennsylvania.

Some final words

The Stradella bass system allows the accordion player to play a wide range of chords and bass lines, making it a versatile and convenient method for accompanying melodies and playing accompaniment in various musical styles.

Learning the circle of fifths and understanding its application to musical instruments will help accordionists understand and retain music theory concepts.

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