Songifier — Free Vocal Isolation, Stem Splitter & Song Splitter for Musicians
Songifier is a free online tool for musicians. Isolate vocals, separate audio stems, create karaoke tracks, slow down music without changing pitch, transpose keys, and auto-detect chords — all in the browser, no account required.
Vocal Isolation & Song Splitter
Upload any MP3, WAV, M4A, FLAC, or OGG file and Songifier's Splittifier tool separates it into clean stems: vocals, drums, bass, guitar, and piano. Use it as a vocal remover to create karaoke backing tracks, a drum stem extractor for practice, a bass isolator for transcription, or a guitar separator for learning riffs note by note.
- Vocal isolation — extract clean lead and backing vocals from any song
- Vocal removal — strip vocals to create karaoke and instrumental backing tracks
- Drum separation — isolate the full drum kit or decompose into kick, snare, toms, and cymbals
- Bass isolation — extract the bass line for transcription and practice
- Guitar and piano separation — available in High-detail (6-stem) mode
- Download any stem as a high-quality WAV file or grab all stems as a ZIP
- Record directly from your microphone — no file upload needed
Pitch-Preserving Tempo Control — Slow Down Music Without Changing Key
The Speedifier uses the SoundTouch algorithm to slow down or speed up any track or stem from 25% to 150% without altering the pitch. Use it to learn difficult solos, transcribe fast passages, or rehearse to a backing track at a comfortable tempo.
Key Transposition — Shift Pitch Semitone by Semitone
The Pitchifier transposes any audio up or down by ±12 semitones in real time. Instantly move a song into a friendlier key for your voice or instrument.
Automatic Chord Detection & Measure Grid
After stem separation, the Chordifier analyses the harmonic content and displays a live-scrolling chord chart synchronized to playback. Chords are quantized to the beat grid and laid out in a wrapping measure grid with S/M/L card sizes — ideal as a lead sheet on a tablet at a gig.
Built-in Metronome with Auto-Tempo Detection
The Clickifier detects the song's BPM automatically and locks a Web Audio click track to the beat. Supports custom click samples, downbeat accent, tap tempo, and beat-1 re-anchoring. Also available as a standalone metronome.
A/B Loop Practice
Set loop-in (A) and loop-out (B) points on the waveform visualizer to repeat any passage indefinitely. Stays perfectly locked at any playback speed.
Who Uses Songifier
- Guitarists and bassists learning songs by ear
- Singers needing isolated vocal tracks or karaoke backing tracks
- Drummers practicing to isolated drum stems
- Music teachers creating individualized practice materials
- Producers and remixers extracting stems for DAW projects
- Transcribers slowing down solos for note-by-note analysis
- Gigging musicians reading chord charts on stage
- Karaoke enthusiasts creating backing tracks from commercial recordings
Frequently Asked Questions
How does vocal isolation work?
Songifier uses Demucs, Facebook Research's Hybrid Transformer model, to separate audio into stems. Demucs processes the full audio waveform using a deep neural network trained to disentangle vocals from drums, bass, and other instruments with high fidelity.
Is the stem splitter really free?
Yes. Songifier is completely free to use — no account, no subscription, no watermarks. Upload a song and get your stems.
What is the difference between Standard and High-detail mode?
Standard mode uses Demucs htdemucs (4 stems: vocals, drums, bass, other) and is fast and reliable. High-detail mode uses htdemucs_6s (6 stems: adds guitar and piano) and takes longer to process. Both are available free.