Practice Tools Hub
Every progression that runs through the standards — turned into a trainer you can hear. Pick a form, pick a key, and the tool spells the chords, draws the chord-scales on piano and guitar, and loops a vamp so you can play along. Start with the ii–V–I, which is live now.
The progression families
Each family is its own hub of per-key pages. They all work the same way — chords, chord-scales and a loopable vamp on piano and guitar.
The cornerstone of jazz harmony. Major and minor, with 24 dedicated key pages.
Open hub → LiveThe standard turnaround that resets the form at the end of a phrase, in all 12 keys.
Open hub → LiveThe 32-bar AABA rhythm-changes form — drill the A and B sections separately or together.
Open → LiveThe 12-bar jazz blues form with its ii–V motion and the chord-scale for each bar.
Open → LiveMajor-third cycle substitutions for the advanced woodshed — once the basics feel easy.
Open → IndexThe flat index of every trainer and visualizer on the site, in one list.
Browse all →ii–V–I · all 24 keys
The ii–V–I is the live trainer. Every key has its own page — the real chords, the chord-scales spelled correctly for that key, and the loopable vamp.
How to use these tools
Pick one progression and one key, and stay there until it feels automatic. Play the chords first so your ear knows the sound, then name the chord-scale for each chord and find it on your instrument.
When the shapes are under your fingers, start the vamp and improvise lines through the changes in time. Once a key feels easy, move it — the goal is the same progression in all twelve keys, not one key memorised by muscle alone.
Short daily reps beat long occasional sessions. Five minutes on two keys, every day, will outrun an hour once a week.
Start with the theory