Chordacus


Use Chordacus to find all chords, scales, and arpeggios!


As a highly developed version of The CAGED system, the Chordacus will display all possible chord shapes in five positions.

Start with finding the root note, then pick your CAGED shape in major or minor.

From here, you can build a pentatonic scale, a mode, or extend it into different chords. Chordacus is color-coordinated so you can see how the chord shape, the pentatonic, and the mode interact.

Below Chordacus, you find the SWS. This is the same thing but now organized per key signature.



Chordacus in a key – The SWS


Thinking of a song’s chord progression as Roman Numerals and the guitar neck as the five positions of the CAGED system, we can visualize the guitar fretboard and clearly see how to build chords, scales, and arpeggios.

This application was developed with the help of a Spytunes student, Christian Grafelman.


Chordacus | Related tools


Tap Tempo Metronome

Spytunes Tap Tempo Metronome can help you when practicing songs and exercises by getting yourself organized.

Manually enter the tempo or simply tap it in. You can also add accents, helping you learn complicated rhythmical patterns.


Online Guitar Tuner

Free online guitar tuner, this tuner can be set to 432Hz, the magical frequency of the universe. Use your phone to tune your acoustic guitar before you start learning.

When playing along with Spytunes video guitar lessons and backing tracks, or any of the original recordings, you need to be in tune.

You can set this online guitar tuner to 440 Hz, or adjust it to work with any song, even those set to the magical frequency of the universe: 432 Hz.