One tempo
0.01%A set runs at one tempo, taken from the opening track or set by hand. Not a drift of a hundredth of a percent across the night. That is what makes hours of continuous mixing hold together instead of slowly falling apart.
02 Set architect03 Autonomous performer
A set is a document before it is a night.
Compose the whole thing without playing a second of it. Read the sequence, edit the draft in the Set Workbench, audition individual joins, and export with cue points to Rekordbox, Serato or CDJs - or press play and leave it alone for six hours.
01Compose without playing
Review it like a score.
Composing is a separate act from performing. The engine works through the pairings it has proven, picks the sequence, chooses how each join is done and how long it runs, and hands the set back as an editable draft.
Which track, into which track, by what technique, over how many beats. The Set Workbench lets you audition any join on its own, swap or remove tracks with ranked replacements that show their measured score, ban pairings forever, pin what you like, and drag to reorder. No edit can ever produce an unmeasured transition.
- A
Export to your gear
Export as a Rekordbox XML with memory cue points on every transition, an m3u8 for Serato and VirtualDJ, or a printed mix sheet. The founder planned a set in the app, exported it, and played it live on CDJs.
- B
The Set Workbench
A generated set is an editable draft. Hear any transition on its own, swap or remove tracks with ranked measured replacements, ban pairs, pin favourites, and drag to reorder.
- C
The Practice Room
Two hand-driven decks with EQ, filter, tempo, crossfader and pair readings. USB controller support includes MIDI learn and published DDJ-400 defaults (unverified against real hardware).
- D
Hand it the night
Some people press play at eight and do not touch the laptop again.
Composed set, shape14 joins
A drawn arc with its joins notched in. The real panel in the app lists every track and every transition by name and length. This is a diagram, not a screenshot.
02The vocabulary
Six ways to leave a track.
A technique carries the shape and the length. Modifiers are the effects laid over the top. The engine weighs the pair against all of them, marks down whatever it just used, and keeps a little randomness, so the same two tracks do not always join the same way.
Seam study, 160 beatsgrid lock
64 to 256 beats Long and ambient. No low-end swap, the two tracks simply become one another.
Positionbeat 00 / 160
Tempolocked, 0.00%
Low bandunswapped
Gatemeasuring
A diagram, drawn from the engine's own thresholds and its own beat ranges. It is not a recording and not a screenshot. The real thing is built as audio, measured, and only then allowed into a set.
| Technique | Beats | Low end | What it does |
|---|---|---|---|
| Deep blend | 64 to 256 | never swapped | Long and ambient. No low-end swap, the two tracks simply become one another. |
| Extended blend | 48 to 96 | handed over | Long, with a deliberate low-end handover partway through. |
| Bass swap | 24 to 40 | handed over | The classic. The lows change hands on a phrase boundary. |
| Quick blend | 12 to 20 | handed over | Tight, for pairs already sitting at the same energy. |
| Drop to drop | 4 to 8 | handed over | A sharp arrival on the incoming drop. |
| Double drop | 8 to 16 | handed over | Both peaks land together. Only when the pair earns it. |
Modifiers, layered on top
- Echo throw on the last few beats, never from the start
- Reverb tail across the outgoing track's final bars
- Filter sweep out, or in, or both
- Vocal high pass when both tracks are singing
- Percussion keep, holding only the drums through the join
- Ambient bridge, a wash with the dry signal dipped
03The laws
Four rules the engine is not allowed to break.
These are what make a night you can walk away from different from a playlist that happens to crossfade.
A night, one temposchematic
Each block is a track, each gap a measured join, all of it at one locked tempo. A drawn diagram of the arc a session takes, not a recording of one.
No repeats
all nightA track plays once per session, remembered for the whole night rather than for the last few minutes. When your folder is too small to keep that promise, the app says so instead of quietly repeating.
Resume
one clickMixterio keeps a running note of where the night has got to. If the app dies at hour four, it comes back and offers to carry on from where the room stopped.
Nothing untested
alwaysNothing reaches the speakers that has not been built and graded first, in any mode, endless included. When nothing good enough is available, the engine tells you rather than playing a weak transition.
Endless mode keeps composing ahead of what you are hearing, so the night has no planned length. It is the mode that carried a real gig, and the one whose every transition we went back and measured afterwards.
04Not finished
What is still being built.
Better you read it here than find it out after you install.
- 01
Permanent library set management
Composing, editing in the Set Workbench, and exporting to Rekordbox XML with transition cues, m3u8 playlists and printable mix sheets work today. Permanent set library persistence across sessions and cloud sync arrive with future updates.
- 02
Steering mid-chapter
Ask for something calmer and the engine turns at the next stretch it has composed, not on the spot. Making that instant is the next thing we are building.
- 03
Controller surface verification
The Practice Room provides two hand-driven decks with EQ, filter, tempo, crossfader and pair readings. USB controller support exists with MIDI learn and published DDJ-400 defaults, but the default map has not been tested against real hardware yet. The on-screen beat grid editor arrives with the first release.
- 04
Genres beyond the calibrated four
Techno, hip-hop, jazz and ambient have been tuned and listened to properly. Everything else plays on the same quality gates and has not been through the same listening sessions.
The next set it plays could be from your folder.
The installer arrives with launch. One email, the day it does.