01
Singers & cover artists
Drop the vocals for a clean backing to sing over, or isolate the acapella and learn the part from the original.
Split any song into stems
Upload an audio file and get clean vocals, drums, bass, guitar and piano tracks in seconds.
Examples
Mode
Vocals & Instrumental
VocalsInstrumental
~25s15 cr
4 Stems
VocalsDrumsBassOther
~30s25 cr
6 Stems
VocalsDrumsBassGuitarPianoOther
~35s35 cr
Output formatMP3 is smaller. WAV is lossless and bigger.
About 25 credits
AI Stem Splitter
Upload any song and Lacuna's AI stem splitter separates it into clean vocals, drums, bass, guitar and piano stems in seconds — ready for remixes, sampling, covers or practice.
How it works
Separate any track into studio-ready stems in three steps
1Step 1
Upload your song
Drop in any MP3, WAV or FLAC. Your file uploads privately and processes in the cloud — nothing to install.
2Step 2
Pick your split
Choose vocals + instrumental for covers and backing, or a full 4- or 6-stem breakdown with separate drums, bass, guitar and piano.
3Step 3
Play, mix & download
Preview each stem, remix them in the built-in mixer, then download the parts you need as MP3 or lossless WAV.
What you get
A stem splitter built for real production work
Clean separation, flexible splits and an in-browser mixer — everything you need to pull a finished song back into its parts and build something new.
Clean, studio-grade separation
AI models pull vocals, drums, bass, guitar and piano apart with minimal bleed — not the muddy artefacts older splitters leave behind.
From a two-track split to 6 stems
Grab a straight vocal and instrumental split for covers and backing, or go all the way to six isolated stems for remixing and sampling.
Remix right in the browser
Solo, mute, and adjust volume and pan across every stem in the built-in mixer, then export your own remix — no DAW required.
Yours to download
Export any stem as MP3 or lossless WAV, or grab them all at once. Keep the parts and drop them straight into your project.
Who it's for
Made for anyone who needs the parts, not just the mix
Singers, producers, musicians and creators use stems to sing over, sample, learn, and score — Lacuna gets you there in one upload.
02
Producers & remixers
Pull drums, bass and melodies out of any track to sample, flip and rebuild into something of your own.
03
Musicians & learners
Isolate the guitar, piano or bass line to learn a part by ear or slow it down for practice.
04
Video & content creators
Lift a clean instrumental for videos, podcasts and streams without the vocals getting in the way.
FAQ
Questions about splitting songs into stems
A stem splitter uses AI to separate a finished song back into its individual parts — vocals, drums, bass, guitar, piano and more. Upload a track and Lacuna returns each stem as its own audio file in about a minute.
Upload any MP3, WAV or FLAC, choose how many stems you want (vocals + instrumental, 4 stems, or 6 stems), and hit Separate. Preview, mix and download the stems once they're ready.
Pick the vocals + instrumental split and that's exactly what you get — a clean backing plus the isolated acapella, nothing else to wade through. There are also pages set up end to end for that one job: Vocal Remover when you want both sides, Karaoke Maker when you're going to sing over it, Instrumental Maker when you're building on the backing.
Two (vocals + instrumental), four (vocals, drums, bass, other), or six (which adds separate guitar and piano). Pick the breakdown that fits what you're building.
MP3, WAV, FLAC, AAC, M4A and OGG, up to 50 MB and 12 minutes per track. You can export your stems as MP3 or lossless WAV.
You get monthly credits free to start, so you can split songs at no cost. Larger splits and heavier use draw more credits, and you can top up any time.
You keep the stems you generate. Just note that separating a copyrighted song doesn't grant rights to the original recording — make sure you have permission for whatever you release.
Single-purpose pages
Only need one part of the split?
Pull any song apart, stem by stem
Upload a track and hear every part on its own — vocals, drums, bass and more. Free to start.