1,000,000,000+
Seconds of music visualized
As of May 2026, the platform has rendered over 1 billion seconds of AI music visuals.
Sample Any Hook With a Free Synthesizer Splitter
Upload any song and pull out just the synth, clean and isolated. Free, with no signup and no limit on how many songs you process.
Built for Real Production Sampling
Made to Actually Sample and Build On
A synth stem only helps if it's clean enough to actually sample and rework into something new. This is built around that standard, pulling an isolated synth line rather than a muddy approximation still tangled up with drums and other layers.
1,000,000+
Creators worldwide
As of May 2026, the platform has served over 1 million creators across the world.
Over 150
Countries resonated
As of May 2026, creators from more than 150 countries have built music videos with this platform.
How It Works
How to Isolate a Synth Line From Any Song
01
Upload the song
Bring in the full track you're pulling a synth part from. There's no length restriction, so a complete song processes the same way a short one would.
02
Select the synth stem
Choose synthesizer specifically from the available stem options rather than pulling the whole instrumental as one combined file.
03
Let the separation run
The engine isolates the synth line from the rest of the mix automatically, without requiring manual EQ work on your end.
04
Download the isolated synth
Export the synth stem free, with no watermark and no restriction on how many songs you process this way.
Capabilities
Built for Sampling and Rebuilding
Made for actually reworking a synth part, not just listening to it.
Clean Isolation for Real Sampling
The synth comes out separated from drums, bass, and vocals rather than blended into a general instrumental. That matters if you're pulling a specific melodic hook or texture to build a new track around, since leftover bleed from other instruments undercuts the sample.
- True isolated synth stem
- Not blended with other instruments
- Clean enough to sample
No Signup to Get Started
There's no account creation step between choosing a song and getting the synth stem back. Upload and go, which matters when you're mid-session and don't want an extra step slowing down the creative flow.
- No account needed
- No confirmation wait
- Start immediately
Full Songs, Not Short Clips
The entire track processes at once, not a trimmed preview. A synth line that cuts off partway through a song limits how much of it is actually available to sample or rework.
- Complete song every time
- No mid-song cutoffs
- Works on any song length
No Cap on Repeated Use
There's no limit on how many songs you can process, and no credit balance ticking down as you dig through several tracks looking for the right synth texture or hook.
- No monthly limit
- No credit system
- Scales with a real production session
This Site Also Makes Karaoke Videos and Singing Photos
Beyond isolating synths, this site includes a karaoke and lyrics video maker for songs that need synced on-screen text, and an AI tool that turns a photo into a singing or talking video. Both are separate free tools if a project ever calls for either.
- Lyrics video maker included
- Photo-to-singing-video tool included
- Both free, same site
Free Export, No Watermark
Every isolated synth track downloads clean, with no watermark and no paid tier gating a better version of the same result. That stays true whether it's the first file you've ever processed here or the fiftieth one this month.
- No watermark, ever
- Full-quality export
- No paid tier needed
How It Stacks Up
karaokevideo.ai vs. LALAL.AI, Moises.ai, and Ultimate Vocal Remover
Grounded in each tool's published free-tier terms.
Feature
karaokevideo.ai
LALAL.AI
Moises.ai
Ultimate Vocal Remover
Price
Free, no paywall
Free preview only, paid plan for full split
Free tier capped at 5 uploads a month
Free, self-installed desktop app
Dedicated synth stem
Yes
Yes, on the paid tier
Limited on free tier
Yes, model-dependent
Sign-up required
No
No for preview, yes to pay
Yes, for the free tier
No, but requires installing software
Full-song processing
Yes, no trimming required
Depends on plan
Depends on plan
Yes, no length limit
Upload limit
No fixed cap
Varies by plan
5 uploads a month on free tier
No cap, processed locally
Setup required
None, browser-based
None, browser-based
None, browser or app
Desktop install and a capable GPU recommended
Watermark on output
None, ever
Not specified as watermarked
Not specified as watermarked
None
Why Creators Choose karaokevideo.ai
Built for Real Production and Sampling Work
Made to actually be useful for building something new.
Clean Enough to Build On
A synth sample full of bleed from other instruments isn't usable in a real production. This is built to hold up when actually sampled and reworked.
No Setup Friction
Skipping an account creation step means more time in the creative flow and less time on registration steps.
Scales With a Real Digging Session
Sampling synth parts from many tracks works the same way as doing just one, without a cap appearing partway through.
Works on Any Electronic Genre
Synth-pop, house, techno, and other synth-heavy genres all process the same way, without needing different handling per style.
No Surprise Cost Mid-Session
Finding out a tool wants payment partway through a production session is the last thing anyone needs. There's no such wall here.
Full Output, Not a Teaser
What downloads is the complete, usable synth stem every time, not a limited preview of a better paid version.
From Producers Who Use This Regularly
What Producers Say
Reviews from people sampling and building new tracks with this.
4.7/5
★★★★★
From 2,700+ synth parts isolated Featured on
AW
Ansel W.
Electronic producer
★★★★★
I dig through a lot of tracks looking for the right synth texture to sample, and having clean isolated stems from this makes that process a lot faster.
DR
Delphine R.
Bedroom beatmaker
★★★★★
Pulled a synth hook from an old favorite track and it sampled cleanly enough to build a whole new beat around it without extra cleanup work.
KH
Konstantin H.
House music producer
★★★★★
Processed several tracks in one session looking for a specific arpeggio and never hit a limit, which mattered for how much digging I had planned.
WO
Wilhelmina O.
Sound design student
★★★★★
I study isolated synth patches to understand how producers layer sounds, and this has held up across a lot of tracks over a semester of coursework.
BL
Baptiste L.
Techno producer
★★★★★
The isolation quality on synth-heavy tracks specifically has been better than I expected from a free tool with no signup required.
SK
Seraphine K.
Remix producer
★★★★★
Sampling from this has become a regular part of my workflow now, and it has never once asked for payment across dozens of tracks.
Who This Is Actually For
Built for Real Sampling and Production Work
Not a novelty split, a tool for repeated real use.
Electronic Producers
Sample a specific synth hook or texture from an existing track to build a new production around, with isolation clean enough to actually use.
Bedroom Beatmakers
Dig through tracks for the right synth sound without needing professional studio software, isolating parts fast enough to keep a session moving.
House and Techno Producers
Pull isolated arpeggios, leads, or pads from reference tracks for a genre where synth textures carry a lot of the production's identity.
Sound Design Students
Study how producers layer and use synth sounds by isolating them from finished tracks, useful for coursework or self-directed learning.
Remix Producers
Extract synth elements for a remix project, working through several source tracks in one sitting without a per-track cost adding up.
FAQ
Common Questions
What people ask before their first synth isolation.
How clean is the isolated synth track?
On a typical, well-produced electronic track, the isolation is clean enough to sample directly. Very dense productions with layered synth textures can be a harder case for any separation tool, this one included.
Is there a limit on how many songs I can process?
No, there's no monthly cap or signup-credit system limiting repeated use, so digging through several tracks for the right sound doesn't run into a wall partway through.
Do I need to sign up for an account?
No, there's no sign-up step required before you can start. Upload a song and get the isolated synth back directly. That matters most when you're in the middle of a real project and don't want an extra registration step slowing down the work.
Can I get other stems from the same song too?
Yes, this site's stem splitter supports other instrument types as well, so pulling synth and drums from the same upload, for example, is not a problem.
Does it work on live recordings, not just studio tracks?
Yes, though expect a somewhat rougher result than a studio recording. Live performance recordings introduce noise that makes isolation slightly less clean than a controlled studio environment.
What file formats does it accept?
Common formats like MP3 and WAV both work without needing to convert first, whatever the source recording happens to be in. There's no need to convert a file into a specific format before it will work, which saves a step compared to tools that only accept one narrow file type.
Is there a watermark on the isolated track?
No, every export is clean with no watermark added, on the free tier or otherwise. That holds true no matter how many times you come back to use the tool, not just on a first try.
Is there a song length limit?
No, the full song processes from start to finish regardless of length, so a longer track doesn't need to be trimmed before uploading. A short clip and a full multi-minute track both process through the same pipeline without special handling.
How long does processing take?
Most songs finish in well under a minute, though longer or more complex tracks can take a bit more time to process fully. There's no artificial delay added on top of the actual separation work, so the wait is only ever as long as the processing genuinely requires.
Can I use an isolated synth sample in a track I plan to release?
There's no restriction here on what you do with the isolated track afterward, though you should still check the rights to the original song before releasing content built from a sample of it.
- How clean is the isolated synth track?
- On a typical, well-produced electronic track, the isolation is clean enough to sample directly. Very dense productions with layered synth textures can be a harder case for any separation tool, this one included.
- Is there a limit on how many songs I can process?
- No, there's no monthly cap or signup-credit system limiting repeated use, so digging through several tracks for the right sound doesn't run into a wall partway through.
- Do I need to sign up for an account?
- No, there's no sign-up step required before you can start. Upload a song and get the isolated synth back directly. That matters most when you're in the middle of a real project and don't want an extra registration step slowing down the work.
- Can I get other stems from the same song too?
- Yes, this site's stem splitter supports other instrument types as well, so pulling synth and drums from the same upload, for example, is not a problem.
- Does it work on live recordings, not just studio tracks?
- Yes, though expect a somewhat rougher result than a studio recording. Live performance recordings introduce noise that makes isolation slightly less clean than a controlled studio environment.
- What file formats does it accept?
- Common formats like MP3 and WAV both work without needing to convert first, whatever the source recording happens to be in. There's no need to convert a file into a specific format before it will work, which saves a step compared to tools that only accept one narrow file type.
- Is there a watermark on the isolated track?
- No, every export is clean with no watermark added, on the free tier or otherwise. That holds true no matter how many times you come back to use the tool, not just on a first try.
- Is there a song length limit?
- No, the full song processes from start to finish regardless of length, so a longer track doesn't need to be trimmed before uploading. A short clip and a full multi-minute track both process through the same pipeline without special handling.
- How long does processing take?
- Most songs finish in well under a minute, though longer or more complex tracks can take a bit more time to process fully. There's no artificial delay added on top of the actual separation work, so the wait is only ever as long as the processing genuinely requires.
- Can I use an isolated synth sample in a track I plan to release?
- There's no restriction here on what you do with the isolated track afterward, though you should still check the rights to the original song before releasing content built from a sample of it.