AI set preparation for techno and house DJs
Bring the playlist you are playing this month. Doors of Harmony builds a full set with a real arc, shows you why each blend works and rebuilds the rest of the night around every track you skip.
Track 08 → 09 · 8A → 11B · 128 → 129
Picardy Turn
The root stays on A while minor opens into its own major. Energy steps up one notch and the room hears dawn where it expected night.
Land it on the drop, not the breakdown, so the color change arrives with the kick.
Suggested · medium blend
Start First Light at bar 49.
Its intro runs under the outro of Night Engine for 16 bars. Swap the bass on bar 65, where the drop of First Light lands.
Both tracks hold a steady 4/4 here, so the groove carries the blend while the harmony turns from minor to major.
Build me a warm, dark opening hour from my playlist. Nothing above 127 for the first 20 minutes.
Here is a 60 minute opening in three chapters. It stays in the minor keys around 6A to 8A and saves the first major color for minute 52.
Glass Room into Warm Static is a Relative Shift: same energy, the color flips to major. Want it darker? I can hold 8A and swap Warm Static for Night Engine.
Current phrase
Strip the kick in 2 bars
Breakdown lands at the next phrase. Let it breathe for 8 bars, then bring Halo Fade in under it.
Next 3 moves
Interface preview. Doors of Harmony is in private development.
Reasoning built on Claude by Anthropic. Imports from rekordbox and Traktor. Native on macOS.
Products
Both share one engine that listens to your music and reasons about it. One prepares your sets, the other sits next to you in Ableton Live. When they launch you can buy either one, or both together.
Made for the long night
Most of the work on a set happens at home: digging, ordering, test blends late at night. Doors of Harmony is built for that part.
How it works
You play a two hour warehouse slot on Saturday. This is what preparing it looks like.
You import your Saturday folder from Rekordbox, 240 tracks. While you make tea, Doors of Harmony reads every one for key, mode, energy, groove and where its phrases start.
You type what you want. Complete ordered sets come back, each one drawn as an energy arc.
"two hours, warehouse, start dark, peak late, land soft"
Track six hits too hard. You tap too hard. Everything after track five rebuilds, and the session lowers its ceiling so the next picks come in softer.
session adjusted: softer
Three tracks you have wanted to play back to back for weeks become a cluster. They move through the set as one block and keep their order.
Night Engine into First Light: a Picardy Turn, minor opening into its own major. Start First Light at bar 49, swap the bass on bar 65.
You ask why track seven sits where it does. The advisor answers from the scores: strong harmony, one step up in energy, weaker on groove. It offers two tracks that fix the groove.
"why is track 7 here?"
The set lives in your head and in your DJ software. You still read the room, ride the EQ and change your mind whenever you like. You also know what each choice will do.
Features
Doors of Harmony measures key, mode, energy, groove and structure for each track. A reasoning layer built on Claude turns those numbers into plain advice about your next move.
Chapters and clusters
Shape the night in chapters: open, rise, peak, breathe, land. Group two to four tracks into a cluster and they travel together. When a chapter feels off, swap all of it and pick from three alternatives.
Harmony map
Every track sits on the wheel by key and mode, and your set draws a path through it. You see where the night stays home, where it travels, and the routes through your music you have never tried.
A teacher in the room
Tap a word like syncopation and it opens into three lines and a picture. Pick theory, feel or plain language. You pick up the theory as you go.
Bb minor · 3A · syncopation high · swing 50%
Promo Inbox Coming
Drop in this week's promos. Each one arrives analyzed, with the chapter it fits, the track it follows best and the new key routes it opens.
The Combination Book
Like an opening book in chess: 34 harmonic combinations, each with a name and a known effect on the room. Doors of Harmony finds the tracks in your playlist that can play each one.
Also called The Sunrise Turn
DarkTriumphantsudden
Minor resolves into its own major, root fixed, three numbers up on the wheel: dawn where night was expected.
In your playlist Night Engine → First Light
More
Each one removes a step you do by ear today.
A short, medium and long option, with the bar to start on and what overlaps while you blend.
Save named styles. They learn from what you keep, lock and refuse, never from tracks you scrolled past.
Type "the rolling dark one that breathes" and get the matching tracks from your own playlist.
Too hard, too soft, wrong key feel, overplayed. Pick a reason and the set rebuilds around it.
The reasoning layer reads the analysis of your own tracks, so every answer is about your music.
Finished sets go back to Rekordbox and your DJ software as ready-to-play playlists.
Coming next
Set preparation launches first. On the same engine we are building a timeline to test the whole set, and a second screen for when you play it.
Composition
timeline
Lay the set out like an arrangement. Cut a section, drag the loop tool and it tiles on the track's own phrase grid. Draw filter and volume moves with a pen; they land soft, so nothing clicks. Scrub anywhere and hear it at once.
Live
advisor
In the booth it shows the current phrase, the next move and how many bars until it, your three best next tracks, and a warning when the floor starts to stall. It counts in bars and phrases, the way you do.
Live
layering
Loop a pad and ask what fits under it. You get a bass line from your own sample bank in the same key, hats that sit above the pad and stay out of its way, and a list of what to hold back until the groove is in.
Who it is for
You bring the taste. Doors of Harmony takes the hours of checking and re-ordering. We started with techno and house, where long blends let the crowd hear the harmony.
FAQ
No. Doors of Harmony helps you choose and order tracks and tells you what each transition will do. The EQ, the faders and the timing stay in your hands.
Doors of Harmony imports your library from Rekordbox or Traktor. Export of finished sets back into your DJ software is in development.
The explanations come from a reasoning layer built on Claude, Anthropic's model. It works from the analysis of your own tracks, so it talks about your music, not music in general.
Doors of Harmony is in private development. Early access opens first to a small group of techno and house DJs. Founding members will get a founding rate.
Early access
A small first group of techno and house DJs will shape what Doors of Harmony becomes. Tell us what you play and where.