Every article tagged scales.
The French composer Olivier Messiaen defined seven symmetrical scales whose intervallic structure repeats in two or more keys. Here are all seven, with their structure, intervals and transpositions.
How to improvise with the C major scale as soon as you start learning it: per-string, CAGED and 3NPS fingerings, then jamming on backing tracks for each of the seven modes.
The CAGED system is not really a system at all, but a phenomenon that occurs naturally on the six-string guitar in standard tuning. What it is, what it isn't, and how it applies to common scales.
The five additional scales from Allan Holdsworth's 1993 book 'Just for the Curious', with his own symbols, the notes and the interval formulas for each.
Allan Holdsworth's own list of his most usable scales, from the 1992 REH video: the formulas, his personal symbols, and the triads, seventh chords and modes contained in each.