I'm a singer — got tired of bad vocal removers, so I built one with preview before download
I sing, and I've burned hours on vocal remover sites that hide the output behind a paywall or a download wall. You upload, wait, pay, and then hear that the karaoke track has ghost vocals bleeding through or the instrumental sounds like it's underwater. As a singer that's the worst possible workflow — you can't tell if a track is usable until after you've committed.
So I built Opus around the things I actually needed as a vocalist:
- Preview both stems in-browser before downloading — judge with your ears, not a thumbnail
- Pitch shift so I can drop a track into my range instead of straining (experimental, not yet stable)
- Tempo shift for slowing down hard passages when learning a song (experimental, not yet stable)
- No signup, no paywall, MP3 download — same flow whether it's a 3-min cover or a full set
- Clean vocal stem too, if you want to study phrasing or practice harmonies over the original
On quality: I spent a lot of time A/B-ing separation models on the kind of material singers actually use — pop mixes, acoustic ballads, dense rock masters — and tuning the pipeline for the cases where most free tools fall apart (sibilance artifacts, breathy vocals getting eaten, reverb tails bleeding into the instrumental). It's not perfect on every song — nothing free is — but the preview means you'll know in 10 seconds whether a given track came out usable.
Link: https://opus-music.vercel.app/
If you sing or play and want to throw a track at it that broke other tools, I'd genuinely like to hear what comes out. Roast welcome.