Quantum Development

Cue points that sound like you

Name: Metamix
Price: 20 USD
Author: Quantum Development

Metamix analyzes your library locally and writes consistent, phrase-accurate hot cues, memory cues, and tags — straight into Rekordbox. Your manual edits stay sacred.

Join the waitlist See how it works

macOS 27+Apple SiliconRekordbox 7

Screenshot coming soon

Analysis, live — every pass runs on your Mac

Why Metamix

Your archive, working like an instrument

Hours back, every import

Analysis, tags, and cues for a 20,000-track library run overnight in a resumable queue — not a week of evenings.

Consistent cues, every track

Builds, breakdowns, and drops detected from the audio and snapped to your Rekordbox grid on the 8/16-bar phrase. The same logic, track after track.

Safe by design

Snapshot, diff, apply, audit, undo. Manual Rekordbox edits are detected and respected — automated writes never touch them.

The workflow

Scroll through the pipeline

Analyze

Apple's native frameworks read rhythm, structure, energy, and key on the Neural Engine.

Tag

Local models surface genre and mood — techno · driving, mood: tense — with evidence attached.

Cue

Builds and drops are detected from sub-bass and pace, then snapped to your Rekordbox grid.

Import

The write plan shows every change before anything is applied. Undo is one click, always.

techno · driving mood: tense 8A · 128 BPM

C · main_drop lands on bar 80 (confidence 0.81)
B · build_before_drop armed before every drop
10 memory cues max — ≥ 4 bars apart, deduped
Beatgrid: read-only — Rekordbox stays the authority

Illustrative preview — real footage coming soon

Inside the engine

The metamix profile — real, not mocked

These aren't invented for the website. Every pad below is the canonical role-first profile Metamix ships with — the same roles, order, and algorithms it writes into Rekordbox on every track.

A Intro intro_in

B Build build_before_drop

C Main drop main_drop

D Outro outro_mixpoint

E Vocal hook vocal_hook

F Breakdown breakdown

G Loop pocket loop_pocket

H Pre-drop cut cut_before_drop

bar 32 · drop1bar 80 · drop_main (conf 0.81)bar 96 · brk

Golden-fixture example · 3:30 track

Memory cues: up to 10 memory cues≥ 4 bars apartrole + time dedupeconfidence floor 0.55missing role → skip

The workflow

Analyze → Tag → Cue → Import

Analyze

Native Apple analysis on the Neural Engine — rhythm, structure, energy, key — in seconds per track.

Tag

Local models write genre, subgenre, and mood tags, with the rule and evidence behind every tag.

Cue

The cue engine places hot cues and memory cues on your Rekordbox grid, with drop and build landmarks.

Import

Review the diff, approve, and write back to Rekordbox safely — audited and reversible.

0 tracks processed overnight

<0 s seconds per track

0 B bytes of audio uploaded

0% of writes audited and undoable

First look

See the cue engine work

We're putting the finishing touches on demo footage of the full pipeline — analysis, tag review, and cue placement on a real Rekordbox library. Waitlist members see it first.

Get the first look