Chord progression generator: pick a key, hear the progressions

It is not random. The panel holds six progressions named in market research as the most used — the axis I–V–vi–IV, the authentic I–IV–V–I, the jazz ii–V–I, the turnaround I–vi–ii–V, the doo-wop I–vi–IV–V, and the minor axis vi–IV–I–V — and it fits each of them to the scale currently set on the circle. Change the tonic and all six move; change the scale and the chords are rebuilt on its degrees.

That is a deliberate choice over a random-sequence generator. A random progression is easy to produce and almost never useful: the reason these six recur across decades of songs is that they resolve in ways listeners already recognise. Getting them in your key, with sound, in one click is the part that actually saves time.

It does not listen to your melody. If you already have a tune and want chords fitted to those particular notes, that is a different job and it lives in the studio: you put the melody in, and the harmony is chosen for the notes you actually wrote, which is why the same tune can get several equally valid answers.

So the two tools answer opposite questions. Here you have a key and want something to play; there you have a melody and want what goes under it. Starting from the wrong one costs an evening, and the difference is worth naming before you begin.

On guitar the practical move is to set the tonic to a key with open chords — C, G, D, A or E — take the progression that fits, and use a capo if the singing wants a different pitch. The panel gives chord names rather than shapes, so any of the six works with whatever voicings you already know.

On keys the panel is most useful for testing which key sits under the hand. The same progression in D flat and in D behaves quite differently for the fingers while sounding a semitone apart; hearing both takes a few seconds here and saves rewriting later.

Pick one, play it round twice, and hum over it. The loop is deliberately short because that is how songs get written: the same four chords under a melody that changes is a verse and a chorus. If nothing arrives after a few passes, change the tonic rather than the progression — the same sequence in a different key often unlocks a phrase.

When something does arrive, take it into the studio. There you can write the melody on a staff, keep the progression underneath, change any bar that stops working, and hear bass and harmony together — which is the point at which a loop stops being an exercise and turns into a piece.

A longer list is worse, not better. Most published progressions are variants of these six — a substituted last chord, a borrowed minor fourth, an inversion in the bass — and starting from the variant hides the shape underneath it. Learn where the six sit in a key and the variants become choices instead of items to look up.

The other reason is practical. A hundred options is a menu, and a menu invites browsing; six is a set you can hear through in a minute and actually pick from. The tool is meant to end with you playing something, not with you having read a list.

It fits six classic progressions to the scale you set on the circle. Change the tonic and all six transpose; change the scale and the chords are rebuilt on its degrees. Each one plays back on the spot.

No, and deliberately so. Random sequences are easy to make and rarely useful; these six recur across decades of songs because they resolve in ways listeners recognise.

Not here — that is the opposite job. The studio takes a melody and chooses harmony for those particular notes, which is why one tune can get several equally valid answers.

Yes. Set a key with open chords — C, G, D, A or E — take the progression that fits and use a capo if your voice wants another pitch. The panel gives chord names, so any voicing works.

Because most published progressions are variants of these six. Knowing where the six sit in a key turns the variants into choices, and a short set is one you can actually hear through and pick from.