The Chromatic scale is the most fundamental scale in all of music. Composed of all 12 notes in the musical scale, it is not very useful in a musical sense when played up and down. Chromatic scales are best used when learning how to navigate the fretboard and to build other, more useful, scale shapes. I have included a diagram of the chromatic scale using 4 notes per string. Try playing the scale in the 11 other keys for the best results (the diagram I've included starts on the root A).
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