Same technology, different number of stems
A stem is one group of sounds from a song, such as all the drums or all the vocals. AI separation listens to a finished mix and predicts which sound belongs to which group. A vocal remover asks one question: is this the voice or not? A stem splitter asks several: is this voice, drums, bass, guitar, piano, or something else? So every vocal remover is really a stem splitter set to two stems, and terms like instrument splitter, stem remover and audio separator are describing the same thing.
The practical difference is what you can do with the result. Two stems let you keep or drop the vocal. Four or six stems let you drop, solo or rebalance individual instruments.
2-stem vs 4-stem vs 6-stem
2 stems: vocals and instrumental
The classic vocal remover. You get the lead and backing vocals on one track and everything else on the other. It is the fastest split and the cleanest route to a karaoke track, a backing track for singers, or an acapella for a remix.
4 stems: vocals, drums, bass, other
The instrumental is broken into drums, bass and a catch-all other stem. This is the standard set most tools and DAWs offer, and it covers drummers and bassists who want to play along with their own part removed.
6 stems: vocals, drums, bass, guitar, piano, other
Guitar and piano come out of the other stem onto their own tracks. That matters for guitarists, keyboard players and anyone transcribing a part, because in a 4-stem split those instruments are mixed together with everything else.
What lands in “other”
The other stem holds whatever the model does not give its own track. In a 4-stem split that is usually guitars, piano and keys, synths, strings, horns, pads and effects returns. In a 6-stem split, guitar and piano are pulled out, so other is left with synths, strings, horns, organ, pads and ambience.
From the mixing chair: sounds that share a range with a named stem can split between the two. A distorted synth bass may land partly in bass, and a strummed acoustic may leave a little in other. Solo each stem before you commit, and use the level faders to rebalance rather than muting outright if a part sounds thin.
Is more stems always better?
No. More stems means more control, not a better instrumental. If all you want is the song without the singer, a 2-stem split is the simplest result: every instrument stays together in one track, exactly as it was balanced in the original mix, with no need to recombine anything. Splitting into 4 or 6 stems and muting only the vocal gets you to the same place with extra steps. The extra stems earn their keep when you want to change the balance between instruments, take out a second part, or hear one instrument clearly. Start with the job, then pick the count, and treat the stem count as a tool choice rather than a quality setting.
Which split for which job
| Job | Stems you need | What you keep or mute | Guide |
|---|---|---|---|
| Karaoke or sing-along track | 2 | Mute vocals | Vocal remover |
| Acapella for a remix or sample | 2 | Solo vocals | Vocal remover |
| Drumless practice track | 4 | Mute drums | Isolate drums |
| Bassless practice track | 4 | Mute bass | Remove bass from a song |
| Learning a bassline by ear | 4 | Solo bass | Isolate bass |
| Guitar practice (play the part yourself) | 6 | Mute guitar | Remove guitar from a song |
| Transcribing a guitar part | 6 | Solo guitar | Isolate guitar |
| Learning or transcribing piano | 6 | Solo piano | Isolate piano |
| Remix or mashup | 4 or 6 | Keep the parts you are building on | Making a mashup |
A simple rule: choose the smallest split that separates the part you care about. If your instrument has a named stem at 4, a 4-stem split is enough. If it would be buried in other, go to 6.
How StemConsole’s three modes map
StemConsole offers all three stem counts, each opened in a live mixer where you can solo, mute and set the level of every stem before downloading.
- Vocal Remover (2 stems, free): vocals and instrumental. The right mode for karaoke, instrumentals and acapellas.
- Quick Split (4 stems, free): vocals, drums, bass and other. The right mode for drumless and bassless tracks.
- Full Separation (6 stems, Pro or a credit): vocals, drums, bass, guitar, piano and other. The right mode for guitar and piano work.
Your first split needs no account. A free account gets 5 splits a month, up to 2 of them Quick Split, with MP3 downloads and mix bounces, basic looping, saved sessions and share links, and no watermarks. Pro is US$6.99 a month or US$49 a year, with a 7-day free trial for eligible users (card required). It adds Full Separation, WAV, 100 splits a month, speed change without pitch change, key change without speed change, named loops, count-in, tap tempo and priority processing. If you only need six stems once, a US$1.99 credit buys a single Full Separation that never expires.
It runs in the browser on desktop or phone and accepts MP3, WAV, FLAC, OGG, M4A, AAC and WMA files up to 200MB. Upload a file you own; there is no YouTube link import.
Frequently asked questions
What is the difference between a stem splitter and a vocal remover?
A vocal remover is a 2-stem split: vocals and everything else. A stem splitter goes further and separates the instrumental into parts, usually 4 stems (vocals, drums, bass, other) or 6 stems (adding guitar and piano). Every vocal remover is a stem splitter set to two stems.
What goes in the other stem?
Everything the model does not give its own stem. In a 4-stem split that means guitars, piano, keys, synths, strings, horns and effects. In a 6-stem split guitar and piano come out separately, so other holds synths, strings, horns, pads and effects.
How many stems do I need?
Use 2 stems for karaoke, instrumentals and acapellas. Use 4 stems for drumless or bassless practice tracks and most remixes. Use 6 stems when you need guitar or piano on its own, for learning a part, transcription or a guitarless or keyless backing track.
Is StemConsole's vocal remover free?
Yes. Vocal Remover (2 stems) and Quick Split (4 stems) are free. Your first split needs no account, and a free account gets 5 splits a month, up to 2 of them Quick Split, with MP3 downloads and no watermarks. Full Separation (6 stems) is on Pro or a US$1.99 credit.
Dan Murtagh is a mixing and mastering engineer based in Melbourne, with 20 years making records and a decade teaching audio production. He built StemConsole as the stem tool he wanted to use himself.
More tools
Vocal Remover
Strip the vocal from any track: clean instrumental plus isolated vocal.
Isolate Drums
Solo or mute the drums for practice, sampling or a drumless track.
Isolate Bass
Hear the bassline on its own, or take it out and play it yourself.
Isolate Guitar
Pull the guitar part out on its own stem to learn or replace it.