Rewave

AI Stem Splitter: pull a song apart by instrument

Upload any track and get clean, individually downloadable stems — up to twelve of them, separated by instrument rather than the usual vocals-and-everything-else pair.

  • Up to 12 stems
  • MP3 · WAV · FLAC · M4A
  • Download each stem
  • No install

What it does

Twelve stems, not two

A stem is one instrument on its own, lifted out of a finished mix. Most free splitters give you two: a vocal and everything else. That is enough to make a karaoke track and not much else — the moment you want the drums without the bass, or the piano without the guitar, two stems cannot help you.

This splitter separates by instrument family. Lead vocal and backing vocals come apart from each other. Drums, bass, guitar, piano, keys, strings, brass, woodwinds, synth and effects each land in their own file. What you actually get depends on what is in the recording — a solo piano piece will not invent a horn section.

If you only need one part, ask for one. Targeting a single stem costs substantially less than a full twelve-way split, which matters when you are pulling drum breaks out of a dozen records.

A snare drum, bass, acoustic guitar, microphone and synthesizer laid out apart from each other on a bare wooden floor

How it works

How to split stems online

A full split takes around ninety seconds.

  1. 1

    Upload your track

    MP3, WAV, FLAC or M4A up to 20MB. Lossless files separate marginally more cleanly, but a decent MP3 is fine.

  2. 2

    The mix is analysed by instrument

    Each part is identified and reconstructed as its own audio file. Instruments that are not present simply produce no stem.

  3. 3

    Play and download each stem

    Preview every stem in the browser, then download the ones you need individually.

Hear it

One song, taken apart

The same thirty seconds, first as the full mix and then one instrument at a time. Every waveform is drawn to the same scale, so a quieter part really is quieter.

Original mix

98–128s
Waveform of the full mix

Vocals

lead vocal stem
Waveform of the isolated vocal stem

Drums

drum kit stem
Waveform of the drum stem

Bass

bass stem
Waveform of the bass stem

Synth

synth stem
Waveform of the synth stem

FX

effects stem
Waveform of the effects stem

Everything but the vocal

instrumental (2-way split)
Waveform of the instrumental stem

Example is our own track, split with this tool. Clips are 98–128s of the song, loudness-matched so the comparison is fair. The full twelve-way split also returned guitar, keyboard, strings, brass, woodwinds and percussion stems — all silent, because this track has none of those. That is the expected behaviour: you get a stem for what is actually there.

What you get

What makes a good AI stem splitter

Up to twelve separate stems

Vocals, backing vocals, drums, bass, guitar, piano, keys, strings, brass, woodwinds, synth and effects — each as its own file, each downloadable on its own.

Lead Vocal
Drum Kit
Bass
Guitar
Piano

Split by instrument family

The point is not "remove the singer". It is being able to keep the bassline and drop the guitar, or solo the strings, on a record you only have as a stereo mix.

Not just vocals and instrumental — the mix is broken down by instrument family.

vocalsbacking vocalsdrumsbassguitarpianokeysstringsbrasswoodwindssynthfx

More than the usual two-way split

A vocal-plus-instrumental pair is a special case of this, not the whole product. If two is all you need, that option is cheaper and faster.

typical free tool
  • vocals
  • everything else
here
  • up to 12 stems
  • separated by instrument

Extract drums from a song, or bass, or guitar, on its own

Name the one instrument you want and skip the rest — a drum extractor, a bass isolator or a guitar isolator, depending on what you ask for. Cheaper per run than a full split, and the usual case when you are sampling.

Drum Kitselected
Bass
Guitar

Only need the drums? Ask for one stem and pay well under the full split.

Who uses it

What people do with stems

Remixing

Keep the vocal, rebuild everything underneath it. The starting point every remix needs and almost nobody is given.

Extracting a drum break

Pull the drums out from under the rest of the arrangement as their own file, instead of filtering and hoping the bleed is quiet enough.

Karaoke and backing tracks

Drop the lead vocal and keep the backing vocals, or drop both and keep the band.

Practising an instrument

Mute the part you are learning and play along with the rest of the band.

Studying a mix

Hearing what a producer actually did to the bass in isolation teaches more than any tutorial.

Fixing old recordings

Split a rough live capture and treat each part on its own — you can only EQ what you can isolate.

FAQ

Stem splitter questions

Take a mix apart

Upload a track and download the stems you need.

Or generate a new song