Once you can play scales and arpeggios over changes separately, the next leap is learning to move between them fluidly — the way great improvisers actually play. Concept cycling is the exercise that makes that transition.
What you'll get out of this lesson
You will learn to cycle between a predetermined list of concepts — scales, arpeggios, pentatonics, triads, and more — as you move through a chord progression, building more varied and interesting lines than you would ever produce from a single approach alone.
Where the idea comes from
The classic jazz lick that everyone learns at some point — up the D minor 7 arpeggio, down a G Mixolydian scale, land on the third of C major — is actually concept cycling in miniature. It goes up an arpeggio, then down a scale, then hits a chord tone. When you look closely at how great improvisers construct their lines, that kind of shifting between concepts is happening constantly. Every time someone teaches you to "practise your scales," then "practise your arpeggios," they are giving you the raw materials — concept cycling is how you actually combine them in musical time.
How to set it up
Take a simple progression — a ii-V-I in C works well: D minor 7, G7, C major 7. Write a list of the concepts you know how to use over chords: triads, scales, arpeggios, pentatonics, triad pairs, enclosures, and so on. Then pick a number of concepts that does not match the number of chords in your progression. This displacement is important — if you have three chords and three concepts, the same concept will land on the same chord every time through. Use two or four concepts on a three-chord progression so that the concepts rotate independently of the harmony.
Pick a different amount of concepts to the number of chords so that they don't always align. If you've got three chords, pick two or four concepts to cycle between.
Voice leading between concepts
The key to keeping concept cycling musical is smooth voice leading at the transition points. When you move from one concept to the next, go to the nearest available note. A jarring leap between an arpeggio and a scale line is usually a voice-leading problem — you jumped to a note that was far from where you left off. Keep the transitions as close as possible, and the line will feel connected even as the underlying concept changes.
Ideas to cycle between
- Diatonic scales (standard 7-note modes)
- Bebop scales
- Pentatonics
- Triads
- Arpeggios (7th, 9th, 13th)
- Upper structures
- Chromatic scales
- Tetrachords
- Hexatonics (triad pairs)
- Chromatic enclosures
- Diatonic enclosures
- Superimpositions and substitutions
- Specific melodic shapes or intervals (e.g. fourths)
- Rhythmic figures (e.g. a bar of continuous eighth notes to a bar of a specific rhythm)
- Subdivisions (e.g. eighth notes to sixteenth notes)
You can also cycle through limitations from the Limitation Games lesson — alternating between three notes per bar and five notes per bar, for instance. And you can assign specific concepts to specific chord types: Dorian on every minor 7 chord, a diminished scale on every dominant chord, major pentatonic on every major chord.
Taking it further
Start simple — two concepts, one easy progression — and build from there. Once you can cycle between scales and arpeggios cleanly, add a third concept. If you are learning something new, sandwich it between two things you already know well: scale, new concept, scale. That way the new concept has a safe landing on either side. You can also write lines out on paper first, away from real time, to work out what sounds good before bringing it to the guitar.
Your homework
This week, take a ii-V-I in C and cycle between exactly two concepts: scales and arpeggios. Work in one position to begin with. Once that feels natural, shift to a different position on the neck. Then swap one of the concepts for something else — triads, or pentatonics — and run the same cycle. Keep a written list of which concept pairs sound most musical to you.