Separating vocals from backing track...
This typically takes 30-60 seconds depending on song length.Show isolated vocals too (for practice / remix)
Upload your favorite song, strip the vocals, and record yourself singing over it. Cheaper than a voice teacher, fun for the living room.
Film your TikTok / YouTube cover over a clean instrumental. Remember: publishing a copyrighted cover still requires a mechanical license.
Build a personal karaoke library for house parties. Better than Spotify-sing-along because you pick the exact version.
Sing the first dance live over a stripped backing track. Way more memorable than the Spotify version.
Generate an instrumental from your lyrics, record a rough vocal, send the demo to collaborators before booking a real studio.
Prep backing tracks for voice students. Strip out the vocal on a recital piece, let the student sing the melody fresh.
Demucs separates cleaner audio better. A 320 kbps MP3 or a WAV beats a YouTube-ripped 128 kbps file every time.
Vocals are typically center-panned. If the song is a mono mix or live recording with vocals baked in the room, separation will leak more than usual.
When using lyrics-to-instrumental mode, pin the key to your vocal range. Men usually comfortable C-G; women often F-C an octave higher. If unsure, leave it on AI chooses.
If the key is wrong, run the output through /music/pitch-changer/ to transpose ±12 semitones. Great for moving a song out of your fight range.
| Free.ai | Moises | Splitter.ai | Karaoke Version | |
|---|---|---|---|---|
| Price | Pay-as-you-go | $4-12/mo | Free (ads) | $0.99-1.99 per song |
| Model | Demucs (MIT) | Proprietary + Demucs | Spleeter | Pre-made catalog |
| Upload any song | Yes | Yes | Yes | No |
| Generate from lyrics | Yes | No | No | No |
| Public API | Yes | No | No | No |
Advanced options
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Remove vocals from any song to create karaoke tracks.
Type text, upload a file, or describe what you want. No account needed.
Our AI processes your request in seconds using the best open-source models.
Download, copy, or share your result. Free for personal and commercial use.
Automate this tool from your own code. OpenAI-compatible REST endpoint, Bearer-token auth, no extra SDK required. Token costs match the web interface.
curl -X POST https://api.free.ai/v1/music/generate/ \
-H "Authorization: Bearer sk-free-..." \
-H "Content-Type: application/json" \
-d '{"prompt": "upbeat synthwave instrumental", "duration": 30}'
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