GUIDE

Features and how to use them

Everything each tab can do, step by step. Find a feature and open it.

SeparateLibraryStudioVideo editorTrainingScore (beta)Settings

Separate

Split a song into per-instrument tracks (stems) — vocals, drums, bass and more. Everything runs on your PC.

Adding songs

Separate from a linkPaste a YouTube link and it downloads and splits it.
  1. In Separate, choose “Separate from a link”.
  2. Paste the link and click Download.
  3. When the download finishes, click Start separation.
TipTurn on Settings › Clipboard detection and a copied YouTube link is filled in when you come back to the app. Paste a Spotify link and the same song is found on YouTube for you to pick.
Separate your own fileSplit audio or video files on your computer, no internet needed.
  1. Click “Separate your own file” and pick a file.
  2. Click Start separation.
Batch processingQueue several songs and split them one after another.
  1. Switch to Batch at the top.
  2. Paste links and click Add, or choose “+ Multiple files…”.
  3. Click Start batch. Clear finished items when done.

Separation options

Choosing a model4-stem (vocals, drums, bass, other), 4-stem+ (same four, more accurate but slower), 6-stem (adds guitar and piano).
  1. Pick under Model before separating.
  2. A model is downloaded once, the first time you use it.
TipIf unsure, keep 4-stem. Change the default in Settings.
Processing deviceAuto uses the GPU (WebGPU) when available, otherwise the CPU.
  1. Leave it on Auto in most cases.
  2. If the GPU has trouble, try CPU (WASM).
Audio only · video qualityWhen downloading from a link, get audio only or choose the video resolution.
  1. Turn on Audio only for a faster, smaller download.
  2. To keep the video, choose a resolution; lower is faster.

Library

Play your separated songs, mute parts to practise, and save stems.

Listening & practice

Muting partsMute stems or change their volume to make the backing you want.
  1. Pick a song in the list on the left.
  2. In the mixer below, mute parts or lower their faders.
A–B loopRepeat just the tricky part.
  1. Drag under the progress bar to set the range (or press A and B while playing).
  2. Turn on Loop. Drag the handles to adjust.
Speed & keySlow down without changing pitch, or shift the key in semitones.
  1. Use − / + under Speed; ×1 resets.
  2. Use the key − / + buttons to move by a semitone.
Metronome & count-inHear a click that follows the song’s beat.
  1. Turn on Metronome. If the BPM is off, use ÷2 / ×2 or click the number to type it.
  2. Turn on Count-in to hear four beats before playback.
  3. Under Click, choose a pattern such as a different sound on beat one.
CheckpointsName spots in the song (verse, chorus…) and jump to them.
  1. At a spot, open Checkpoints and add it with a name.
  2. Click one in the list to jump there.
Automatic bass TAB (beta)Transcribe the bass stem into TAB.
  1. Under Bass TAB, choose a tuning (E A D G, drop D, 5-string…).
  2. Click Transcribe, then View TAB.
TipAccuracy varies by song.

Saving & managing

Save stems or the mixSave what you hear as a WAV, or every stem separately.
  1. Click Save.
  2. Choose “Save current mix (WAV)” or “Save all stems”.
Re-separate · groupsSplit again with another model, or organise songs into groups.
  1. Choose a model under Re-separate.
  2. Use Group to organise; sort the list by group, recent or name.
Open in the StudioTo record over a separated song, open it in the Studio.
  1. In the Studio, click “Load song” (or “Load a song from the library”).
  2. Pick the song; its video and stem tracks come in together.

Studio

Record and film yourself over the original video and stems, then mix and export.

Getting started

Audio on · audio settingsThe Studio needs its audio engine on. With an audio interface, choose ASIO for the lowest latency.
  1. Click Start audio.
  2. In Audio settings, choose driver, output, input, sample rate and buffer, then Apply.
  3. Pick mono/stereo and the input channel, and check that the input meter moves.
TipSmaller buffers mean less delay; if the sound crackles, go one step larger.
Measure real latencyMeasures delay your device doesn’t report so takes land on the beat.
  1. Connect an interface output (line or headphones) to an input with a cable. Turn off direct monitoring.
  2. In Audio settings, click “Measure real latency”. You’ll hear clicks for 4 seconds.
  3. Done when it says the latency was set. It is remembered per device, rate and buffer.
TipClick “Use device report” to go back.
Adding tracksAdd audio tracks to record, or instrument tracks to play with the keyboard or MIDI.
  1. Click “Add recording track” or “Add instrument track (MIDI)” at the top left of the timeline.
  2. For several, right-click the track area › Add multiple tracks…, then choose the type and count (up to 20).
  3. Use a track’s IN button to choose its input channel (each track can differ).
Importing audioPut your own files on tracks.
  1. Drag files onto the timeline, or use File › Import audio.
  2. Drop several at once and each gets its own track; drop one file on a track to put it there.
Saving · templatesSave your work as a .udp file, and keep your usual track setup as a template.
  1. Click the project name at the bottom left, or press Ctrl+S.
  2. File › “Save current setup as template…” keeps track names, inputs, effects, buses and master only.
  3. Start a new one from File › “New project from template…”.
Shortcuts: Ctrl+S

Recording

Recording a takePress R to record straight away.
  1. Turn on R on the track(s) to record — several tracks record at once.
  2. Press R, or the red record button, and play.
  3. Space finishes the take but keeps record armed; Space again keeps recording. Stop ■ disarms.
Shortcuts: RSpace
TipWith no track, R creates one and records. While armed but stopped you can move the playhead and record from there.
Metronome & count-inRecord to a click with a count-in.
  1. Turn on the metronome at the bottom.
  2. Use its settings button for the pattern, subdivision and count-in bars.
  3. Change the BPM below; if detection is off by double, use ÷2 / ×2.
Loop recordingKeep playing over a looped range and each pass becomes a take.
  1. Shift+drag on the ruler to pick a range.
  2. Press L (or the loop button) to turn looping on.
  3. Record, play several passes and stop. Each pass stacks in the same spot; the top one plays.
  4. To use another take, right-click the clip and pick it from the takes at that spot.
Shortcuts: LShift+drag
Punch in/outRe-record only the selected range.
  1. Shift+drag on the ruler to pick the range.
  2. Turn on punch ( ) and start recording before the range.
  3. Recording stops itself after the range, and the new clip is trimmed to it and placed on top.
Comping — choosing takesWhere takes overlap, only the top one plays.
  1. Right-click overlapping clips to see the takes at that spot.
  2. Click one to bring it to the top. Split clips (S) to use different takes per section.
Film while you recordFilm with a webcam, capture card or phone-as-webcam while recording; sync is automatic.
  1. Turn on the camera view with the camera button at the bottom. In its settings, choose the device, resolution (up to 4K), frame rate and mirror, and keep “Also record camera-side sound” on.
  2. Record as usual and it films too (REC shows only while recording).
  3. When you stop, the camera audio lines the video up and you’ll see “Video synced to the audio”.
  4. Move or trim the clip and the video follows. Click “To video editor” next to Export to send the footage and the mix.
TipIf the camera can’t hear the performance (headphones + line input only), the recording-time position is kept.
Keyboard playing · MIDIPlay and record with your computer keyboard, then edit in the piano roll.
  1. Add an instrument track and turn on its keyboard button. Z–M and Q–U become keys.
  2. Recording makes a MIDI clip; double-click it to open the piano roll.
  3. Press Q to quantize. Put an instrument VST first in the effects to use its sound. MIDI keyboards work too.
Shortcuts: Q

Editing

Working with clipsMove, trim, split, fade and duplicate.
  1. Drag to move, drag the edges to trim.
  2. Press S to split at the playhead.
  3. Drag the top corners to fade.
  4. Right-click for duplicate, delete, speed and more.
Shortcuts: SCtrl+C/X/VDelete
TipCtrl+click for several, or drag on empty space to box-select. Hold Alt while dragging to bypass snapping.
Clip speedSlow down or speed up a clip; pitch stays the same.
  1. Right-click the clip › Speed…
  2. Enter 25–400%. Slower makes the clip longer.
  3. Use “Reset speed” to go back.
Bounce to clipMerge clips into one, baking in clip effects.
  1. Ctrl+click two or more clips.
  2. Right-click › Bounce to clip.
TipTrack effects and faders stay on the track. One Ctrl+Z restores the originals.
Slip · rollSlide the audio inside a clip, or move the boundary between two touching clips.
  1. Alt+drag the middle of a clip to slip.
  2. Alt+drag the boundary between two clips to roll.
Tempo · meter · warpTempo and meter changes drive the grid and metronome, and audio clips can be warped to tempo.
  1. Right-click the ruler at a bar › “Change tempo from bar N…” or “Change time signature…”, and enter the value.
  2. Right-click an audio clip › “Follow tempo (warp)…” and enter its original tempo; it stretches to the project tempo with pitch unchanged.
Markers · chords · foldersMark the song structure and group tracks.
  1. Press M for a marker, and to jump.
  2. Double-click an empty spot on the chord lane to add a chord.
  3. Right-click a track header › “Put in new folder”; fold, mute or solo the whole folder.
Shortcuts: M[ / ]

Effects & mixing

Track effects (built-in, VST3, CLAP)EQ, compressor, reverb, delay and amp IR are built in; your VST3/CLAP plugins work too.
  1. Click a track header; its effects appear on the left.
  2. Click “Add VST” and choose a built-in effect or plugin.
  3. Drag to reorder; toggle, delete, and Save/Load tones.
TipAdd plugin folders under VST folders in Audio settings. A plugin that crashes is switched off automatically.
Clip effectsPut effects on one clip only; clip effects run before track effects.
  1. Click a clip; the panel switches to “Clip effects — name”.
  2. Add effects there. Clips with effects show an FX badge.
  3. Click the track header to go back to track effects.
Mixer viewSee every track as a channel strip with volume, pan, sends, mute and solo.
  1. Press X (or the mixer button) to open it at the bottom.
  2. Click a strip to show its effects on the left; drag the top handle to resize.
Shortcuts: X
Sends · VCA · sidechainShare a reverb on a bus, move several faders together, or duck the bass with the kick.
  1. Use SEND A / B on a track; click a bus name to edit its effects.
  2. Create a VCA with “+ VCA” in the mixer view and pick it in each track strip’s VCA box.
  3. In the built-in compressor, choose another track (e.g. drums) under Sidechain to duck this track when it is loud.
Master effects · LUFS meterPut effects on the whole mix and check loudness against YouTube.
  1. Click MASTER in the mixer (or the master strip) to edit master effects; click again to return to the last track.
  2. Play the song through and read I (integrated) on the master strip; around -14 suits YouTube and Spotify.
  3. M is momentary, S is 3-second short-term. Click the box to restart the integrated value.
Automation · MIDI learnChange volume, pan and effect values over time, and map controller knobs to sliders.
  1. Open a track’s automation lane, choose the target and add points.
  2. Turn on MIDI learn, click a slider, then move a controller knob to map it; right-click unmaps.

Exporting

Export the mix, your tracks or stemsExport WAV, FLAC, AIFF or MP3, optionally matched to YouTube loudness.
  1. Click Export at the bottom.
  2. Choose the scope (full mix / my recording / stems per track), format and quality.
  3. Under Loudness, pick YouTube/Spotify (-14 LUFS) or Apple Music (-16 LUFS) to measure and match the whole song.
  4. Set Section to the ruler selection to export just that part.
Stem speed & keySlow the backing (stems) without changing pitch, or change its key.
  1. Click Stem speed or Stem key at the top and pick a value.

Video editor

Cut and dress up your footage and the original video on a timeline, then export.

Basics

Importing · tracksUse video, audio, text, image and shape tracks.
  1. Use Import or drag files onto the timeline.
  2. Add the track types you need under Track.
  3. Choose the aspect ratio (16:9, 9:16 vertical, 1:1…) under Canvas.
Cutting & arrangingTrim, split and move clips.
  1. Drag edges to trim; press S to split at the playhead.
  2. Delete removes; Shift+Delete removes and closes the gap (ripple).
  3. Ctrl+C / Ctrl+V pastes at the playhead; Ctrl+G groups, U ungroups.
Shortcuts: SDeleteShift+DeleteCtrl+GUMF
Tip← / → one frame, Shift+← / → one second, Home/End start/end, F full screen, M marker.
TransitionsFades, dissolves, wipes and more where clips overlap.
  1. Overlap two clips on the same track.
  2. Click the transition mark to choose a type.
Sync by audio · multi-camLine up separately recorded video and audio by sound, and switch camera angles.
  1. Ctrl+click the clips to align.
  2. Right-click the reference clip › Sync by audio.
  3. For multi-cam, press 1–9 while playing to switch angles.
Shortcuts: 1 ~ 9

Effects & color

Adding effectsStack color, style, compositing, flip and tracking effects on a clip.
  1. Select a clip, open the Effects tab on the left and add an effect.
  2. Pick from the list and adjust; reorder to change the order applied.
  3. Save combinations you reuse as presets.
Color grade · scopes · LUTShape the look with wheels and curves; check with waveform, vectorscope and histogram.
  1. Add “Color grade (wheels & curves)”.
  2. Drag inside a wheel for color, the bar below for brightness, and add curve points.
  3. Turn on scopes to check precisely. LUTs (.cube) apply on export.
Chroma key · masks · blendRemove green/blue backgrounds, mask outside an ellipse or rectangle, and blend layers.
  1. Add Chroma key or Mask to the clip on the upper track.
  2. Choose a blend mode such as multiply, screen or overlay.
Keyframes · position/size (PIP)Animate position, size and opacity over time.
  1. Select a clip and use “Edit on screen” to show a box in the preview.
  2. Move the playhead and the box; keyframes (◆) are added there.
  3. Choose linear or smooth per keyframe; right-click to delete.
Speed · ramps · stabilizationChange speed, ramp it, or steady shaky footage.
  1. Right-click › Speed… to change it.
  2. Under Speed ramp, choose slow down, speed up or dip, or draw your own points.
  3. Under Stabilization, pick a strength and click Stabilize.
Auto trackingMake text or an image follow a moving subject.
  1. Add Auto tracking to the text or image clip.
  2. Click “Set area to track” and drag the area in the preview.
Lyrics to captionsPaste lyrics and tap Enter while playing to time captions.
  1. Click Lyrics and paste one line per phrase.
  2. Click Start timing, play, and press Enter as each line starts.
  3. Export an SRT file if you need one.

Audio & export

Mixer · monitorBalance track audio and see clip info and master level.
  1. Use Mixer at the top for track volume and mute.
  2. Monitor shows the time, current clip and scopes.
Export · render queueExport MP4, WebM, ProRes or HEVC 10-bit, matched to YouTube loudness.
  1. In Export, choose a preset (YouTube, Instagram, small file) or set format, resolution, frame rate and quality.
  2. Turn on Loudness for -14 LUFS. On NVIDIA you can enable GPU acceleration.
  3. Use “Add to queue” to keep editing while it renders.
TipSave the current frame as a PNG for thumbnails.
Saving projectsSave video projects and pick up later.
  1. Click the project name at the bottom left, or press Ctrl+S.
  2. Use “Show in folder” to open its location.
Shortcuts: Ctrl+S

Training

Practice tools you can use without a song or project.

Tools

MetronomeA metronome with time signatures, subdivisions and swing.
  1. Set the BPM with ±1 / ±5, or tap it with Tap tempo.
  2. Choose the time signature (2/4–7/8) and subdivision, then Start.
BPM trainerRaises the tempo every few bars until you reach your target.
  1. Set the start BPM, target, step and how often it increases (1–8 bars).
  2. Press Start and play along.
TunerStable pitch detection, even for low notes.
  1. Turn on the audio engine in the Studio (Start audio).
  2. In Training › Tuner, choose the reference (A4 = 440…) and play a string.
Fretboard memorizationLearn note positions on the neck like a game.
  1. Choose the instrument (guitar, 4- or 5-string bass), fret range, strings and note set.
  2. Pick a mode: see & name, hear & find, scale finder, real playing (needs the audio engine), or read & find (find the written note at the same pitch; bass uses bass clef).
  3. Set the length (questions or seconds) and start; results show at the end.
Practice logSet daily and monthly goals and keep notes.
  1. Set goals in Practice log.
  2. Add notes with “+ New note” and filter by period.

Score (beta)

Write guitar, bass, piano, melody and drum scores, open Guitar Pro files, and follow along with the original video. Still being polished.

Making a score

New scoreSet the title, tempo, time signature, bars and instruments to start a blank score.
  1. In the Score tab, click New score.
  2. Pick an instrument (guitar 6/7-string, bass 4/5-string, piano, melody, drums) and tuning for each track, then Create.
  3. It opens in edit mode. Add more tracks with “+ Add track…” in the track box.
Open a fileOpen Guitar Pro (gp3–gp7), MusicXML or a saved .uds score.
  1. Click Open file and choose a file.
  2. Imported scores are saved as .uds when you save.
Auto-transcribe a library songTurn the bass of a separated song into a score draft with the video linked.
  1. Click “Auto-transcribe a library song”.
  2. Choose the bass tuning, pick a song (filter by group), then Start.
  3. The score opens when the progress window finishes. Cancel any time.
TipIt is a draft — fix wrong notes while listening. Songs already transcribed in the Library finish right away.
ExportExport to Guitar Pro, MIDI or PDF to open the score in other apps.
  1. Click the Export (down arrow) button in the toolbar.
  2. Guitar Pro 5 (.gp5) opens in Guitar Pro 5–8, TuxGuitar and MuseScore. Pick this if you use GPX (Guitar Pro 6).
  3. You can also choose Guitar Pro 7/8 (.gp), MIDI (.mid, for DAWs and notation apps) or PDF (the track you are viewing, A4 for printing).
TipThe video sync is kept only in .uds files. GP5 has one staff per track, so piano becomes two tracks (right and left hand).

Entering notes

Edit modePress E to edit, Esc to stop. Notes go on the beat under the cursor.
  1. ← → move by beat, Ctrl+← → by bar. Pressing → at the end of the last bar adds a bar.
  2. Click the score to move the cursor there (and to that string on guitar/bass).
  3. Ctrl+1–6 set the length (whole to 32nd), . a dot, T a triplet, R a rest.
Shortcuts: EEscCtrl+1~6.TR
Guitar & bassChoose a string and type the fret.
  1. ↑ ↓ choose the string, then type the fret; type two digits quickly for 12 and up.
  2. Typing on another string on the same beat makes a chord.
  3. H hammer-on/pull-off, S slide, B bend, V vibrato, P palm mute, X dead note, G ghost, L let ring, N harmonic, A accent — or use the buttons.
Shortcuts: 0~9HSBVPBackspace
Piano & melodyType note names.
  1. Type C D E F G A B. Hold Shift to stack a chord.
  2. + / − move by a semitone; Alt+↑ ↓ transpose.
  3. On piano, ↑ ↓ switch between the treble and bass staff.
DrumsPick a drum and hit it.
  1. ↑ ↓ choose crash, hi-hat, snare, kick and so on (the name shows under the cursor).
  2. Press a digit or Enter to hit; press again to remove.
Bars, time & sectionsUse the edit bar to add or delete bars and set time signatures, tempo, section names and repeats.
  1. “+ Bar” adds a bar after this one (Ctrl+Enter), “−” deletes it.
  2. The 4/4, ♩=, Section, |: and :| buttons set them on the current bar.
  3. Undo with Ctrl+Z, save with Ctrl+S.
Shortcuts: Ctrl+EnterCtrl+ZCtrl+S

Listening & the original video

PlaybackHear the score on a synth, with metronome, count-in and speed.
  1. Space plays/pauses; click the score to play from there.
  2. N metronome, C count-in, the speed box goes 25–150%.
  3. Use the track box to view another instrument.
Shortcuts: SpaceNC
TipUse the sun button to switch just the score paper to light.
Loop a sectionRepeat just the hard bars.
  1. L loops the current bar; press again to stop.
  2. Shift+→ / ← extend or shrink it, Shift+click to a bar, or drag over the score.
Shortcuts: LShift+←→
Add the original videoThe cursor follows the original video; bars are synced automatically.
  1. Click Add video and choose a YouTube link, library song or your own file.
  2. Bars are synced from the beats automatically. Switch what you hear with Original | Synth.
  3. Drag the video window to move it, and its bottom-right corner to resize.
TipReopen the same score and the video and sync are restored.
Fixing the syncFix one bar and the bars after it re-sync.
  1. Click the bar that is off.
  2. Play the original and press M on that bar’s first beat.
  3. If everything is a little early or late, use ±10 / ±50 ms under Adjust sync; Re-sync automatically starts over.
Shortcuts: M

Settings

Language, defaults, storage and updates.

Main settings

DefaultsDefault model, processing device and video quality for Separate.
  1. Choose them under Settings › Separate.
Folders · free up spaceChange where videos and stems are saved, and clean up leftovers.
  1. Use Change… to move folders.
  2. Under Free up space › Clean up…, pick unsaved recordings, stabilized clips and preview cache to send to the Recycle Bin; items in use are locked.
  3. Library cleanup merges duplicates and finds files not in the library.
ModelsModels download when needed; delete unused ones to free space.
  1. See and delete downloaded models under Settings › Models.
Updates · reporting problemsGet new versions and tell us about problems.
  1. With Auto check on, new versions are found at startup; or click Check now.
  2. Report sends your version and audio settings along so the cause can be found quickly.

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Windows 10 · 11 · Installer & portable