Originally published July 16, 2023 · View this post on Patreon ↗
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This handout is part of the 12-PDF Fundamentals Bundle →
This was the 9th Fret Science YouTube video, released on July 16, 2023. As of December 2025, it has been viewed 378k times, making it my third-most-watched video.
Original video description: Intervals are the building blocks of music, and the guitar fretboard makes them easier to identify and visualize than any other instrument. Learn a simple counting trick that will enable you to identify any interval on the fretboard and then use it to demystify any chord voicing.
Two free tools here put this counting to work: Name That Chord names any shape you click in, showing the intervals it counted along the way, and the Chord Decoder runs the other direction, spelling out the intervals inside any chord name.
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The written lesson is a Gold benefit.
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