The Most Capable Stem Separator for Remixers

The Ultimate Remix Production Suite

Stem separation is just the start. Stemulator is the only platform on the market with MIDI chord map export, warp to fixed BPM, and crop to first downbeat — Stemulator-only tools built for producers & musicians who need more than a simple split.

Start Producing See What's Exclusive
Stemulator-only features · Available nowhere else
Stemulator Musicians Mode mixer with all 18 stems isolated, chord map and MIDI export visible
Only on Stemulator

Four Things Nobody Else Does

Every other stem separator returns audio files and calls it done. Stemulator goes four steps further — because dragging raw stems into a DAW is where remix work actually starts.

Stemulator Only

MIDI Chord Map

The whole song's harmony, playable.

Stemulator analyzes a song's chord progression and exports the entire arrangement as a MIDI file. Drop the MIDI into Ableton, Logic, FL Studio, or any DAW and instantly have playable chords — on any synth, sample, or instrument you want.

Reharmonize the original. Build a new beat underneath. Learn the song by ear. Arrange a cover in a different key.

Perfect for · Beatmakers · Arrangers · Music Students · Cover Bands
Stemulator Only

Guitar, Bass & Piano Tabs

Playable tabs, on demand.

Stemulator generates tab PDFs for guitar, bass, and piano directly from the chord detection. Print and hand to a bandmate, or learn the song yourself — no manual transcription, no third-party tab service.

For musicians who learn by playing along, this collapses what used to take hours of ear training into a single click.

Perfect for · Musicians · Cover Bands · Music Students · Worship Bands
Stemulator Only

Warp to Fixed BPM

Your DAW grid, pre-locked.
VARIABLE TEMPO FIXED BPM

Every other stem separator returns stems at the original song's tempo — often drifting or variable. Stemulator time-stretches your stems to the nearest whole BPM using a warp pipeline built on SignalsmithStretch. Variable tempos become fixed, integer BPMs.

Output lands locked to a clean whole-number tempo your DAW can snap to. No warp markers. No transient smearing. No tempo-matching.

Perfect for · DJs · Producers · Remixers · Mashup Artists
Stemulator Only

Crop to First Downbeat

Drop at bar 1, it just works.
PRE-ROLL BAR 1 ALIGNED

Songs don't start on beat 1 of bar 1. They start with silence, anacrusis, counts-in, spoken intros, or fades. Stemulator detects the true first downbeat of every track and crops every stem to start there.

Drag the file into your DAW at bar 1. Everything lines up. No nudging, no snapping, no "why does the kick hit on beat 2" moments.

Perfect for · Remixers · Editors · DJs · Post-Production

Why this changes everything

A traditional remix workflow looks like this: separate stems, import into DAW, manually detect tempo, warp every stem file, find the first downbeat by ear, slice each stem, align to grid, repeat for 8+ tracks. That's two to three hours of setup before you've touched a single creative decision.

The Stemulator Remix Production Suite collapses that to zero. You toggle "warp to fixed BPM" and "crop to downbeat," and download stems that are already quantized, gridded, and MIDI-mapped. Your DAW opens. Everything's on a clean integer BPM, starting at bar 1. The creative work starts immediately.

This is the difference between a stem separator and a production suite. We built it because no one else had — and because producers kept asking for it.

The Workflow

From Upload to Finished Remix

How a producer actually uses the full suite, start to finish.

01

Upload the Song

Drop any MP3, WAV, FLAC, or M4A into Stemulator. We detect BPM, key, and chords automatically.

02

Set Target BPM

Want your remix at 128? Tell Stemulator. Every stem comes back time-stretched to match, studio-quality.

03

Crop to Downbeat

Toggle on. Every stem gets trimmed to start on beat 1 of bar 1 — ready to drop into your DAW at position 0.

04

Export + MIDI Chord Map

Download up to 18 stems in lossless WAV or AIFF (or MP3), plus the MIDI chord map for playable harmony on any instrument.

05

Drop into Your DAW

Everything lands grid-perfect at bar 1. Chord MIDI plays the original harmony. Build your remix.

06

Iterate in Musicians Mode

Need to A/B a key change or rebalance stems? Musicians Mode lets you mix, transpose, and re-export in seconds.

And Everything Else

The Rest of the Suite

Beyond the three exclusives, Stemulator packs every tool a remix producer needs.

🎛️
Musicians Mode
DAW-style mixer — mute, solo, balance in real time. Change key and tempo on the fly. Live chord maps with guitar, bass, and piano tabs.
🔢
Up to 18 Stems
Lead vocal, backing vocal, bass, ensemble, piano, guitar, strings, winds, keys/synths, drums — plus kick, hi-hat, snare, toms, cymbals individually.
🎹
Guitar, Bass & Piano Tabs
Playable tab PDFs generated from the chord detection — print and hand to a bandmate, no transcription needed.
💎
Lossless Export
WAV, AIFF, or high-bitrate MP3. Lossless throughout — no compression artifacts introduced along the way.
☁️
Fast Cloud Processing
GPU-powered separation in the cloud. Your laptop stays cool; your stems arrive in minutes.
📱
Every Platform
Web, macOS, Windows, iOS, and Android. One account, every device — start on one, finish on another.
Head to Head

Features Exclusive to Stemulator

FeatureStemulatorMoisesLALAL.AIFadr
Stem separation✓✓✓✓
Drum splitting (kick / snare / hi-hat / toms / cymbals)✓✓—Partial
Individual instrument isolation✓✓Partial✓
BPM + Key + Chord detection✓✓—✓
DAW-style Musicians Mode mixer✓✓——
MIDI Chord Map export✓———
Guitar / Bass / Piano tab PDFs✓———
Warp to Fixed BPM✓———
Crop to First Downbeat✓———
FAQ

Producer Questions

What is the MIDI Chord Map?
A MIDI file of the entire song's chord progression, exported from Stemulator's chord-detection engine. Drop it into any DAW and instantly play the harmony on any instrument — or reharmonize, remix, and build on it.
What does Warp to Fixed BPM do?
Stemulator time-stretches your stems to lock to the exact BPM you choose, using Stemulator's warp pipeline. Output arrives already grid-aligned — no tempo-matching inside your DAW.
What does Crop to First Downbeat do?
Stemulator detects the true first downbeat (bar 1, beat 1) and trims every stem to start there. Drag the file into your DAW at bar 1 and it just works.
Are these features available on other stem separators?
No. MIDI chord map export, guitar/bass/piano tab PDFs, warp to fixed BPM, and crop to first downbeat are all exclusive to Stemulator — you won't find this combination anywhere else.
Can I use Stemulator stems commercially?
Stems from songs you own or have licensed are fully yours. For sampling copyrighted material, follow standard clearance rules as you would with any source.

Build Your First Remix With Zero Setup

Upload a song. The full suite — quantized stems, MIDI chord map, and Musicians Mode — comes with it.

Start With Stemulator
Related Tools
Stem Separator Vocal Remover Musicians Mode

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