Looproom Studio — Music workspace

Projects: New starts a blank project; Open loads a saved JSON or ZIP; Save downloads your project with its audio; Export renders audio. Ctrl/⌘ N, O, and S open these actions. Examples contains three editable projects made in Looproom, including The Mountain recreation. Choose Open example to load the full song. You can download your current work before switching. Every example is editable in the playlist, piano roll, channel rack, and mixer.

Workspace: Open or close editors from the window toolbar or Windows menu. Drag a title bar to float a window, resize from its bottom corner, or use its dock selector to place it left, center, or below. Double-click the title bar to maximize. Arrange, Compose and Mix layouts give you a starting point; Save layout remembers your own setup on this browser. Sound designer, Sampler, and channel Effects also open as floating windows. Use Signal FX on any mixer channel to open its own effects window. In Sound designer or Sampler, choose Open separate window to keep a sound beside another; the Browser also has Edit and FX buttons. Each editor title names its instrument. Tile editors arranges open instrument windows side by side, and saved layouts remember their instrument bindings. Closing a window keeps its music and playback; closing Sampler finishes an active microphone capture. The active editor receives keyboard and MIDI input. F5 toggles Playlist, F6 Channel rack, F7 Piano roll and F9 Mixer. On a window title bar, Alt + arrow keys move it and Shift + Alt + arrow keys resize it. On a small screen, one editor fills the workspace at a time.

Full-song MIDI: Open Windows → Song MIDI & takes. Arm instruments and choose their MIDI device/channel, then Record into song. Computer keys play the selected armed instrument. Takes preserve exact timing and held notes across bars, with MIDI expression. Record audio + MIDI uses the audio recorder’s pre-roll, punch and loop settings. Capture last played recovers up to the last two minutes of playing. Recorded performances appear as MIDI clips in Playlist: drag to move, drag edges to trim, or double-click to edit notes in Piano roll. Original take notes remain available. Choose take ranges to build a MIDI comp.

Record control movements: Open Automation, choose Touch, Latch, Write or Trim, and Arm controls. During Song playback, move mixer faders, pan, effect, send, supported synth or sampler controls. Lanes are created automatically. Stop & save controls commits one Undo step; Cancel pass restores the previous curves. Select an automation lane and use Copy curve, then select or add a lane for the same control and use Paste curve. This replaces the destination lane’s points and interpolation at the original song beats. Undo restores the previous curve. To copy only part of a curve, Shift-drag across its lane or enter Start beat and End beat, then choose Copy range. Set the Playlist Cursor Beat or position the Song playhead, select the same lane or a lane for the same control, and choose Paste at playhead. Set Paste length (beats) to stretch or shrink the copied range before pasting. It starts at the source length. Turn on Reverse range to paste the curve backwards. You can also change its length in the same paste. Turn on Invert values to reflect the pasted curve around the midpoint of the destination control, so 20% becomes 80% on a 0–100% lane. You can combine inversion with reversal and a different paste length. Value scale adjusts the movement around the copied midpoint. Value offset then shifts it in the destination control’s units. A paste must fit that control’s range. Paste mix blends the adjusted copy with the destination curve inside the pasted span. At 50% both curves contribute equally. Set Fade in and Fade out in beats and choose a shape for each edge. Linear changes the mix at a steady rate. Smooth eases at both ends of the fade. Slow start and Fast start change where the fade moves fastest. Use Custom to set two curve controls, and check the Mix preview before pasting. Both fades must fit inside the paste length. Save a named Paste mix preset to keep the mix, fade lengths, and shapes together. After copying a range on any lane, select the preset and choose Load. Presets are shared across projects in this browser. Open Export presets at the top of Automation, choose the presets to share, then select Download selected. Choose Select all to back up the whole library. To restore presets, open Import presets and choose a JSON file. Review the mix and fade settings and check the presets you want. For a name conflict, compare the two presets and choose Keep both, Replace, or Skip. Choose Import selected to apply your choices. The curve keeps its shape, only the destination span changes, and Undo restores it. Continuous synth controls include oscillator level, detune and pan, filter, LFO and level; sampler gain and tuning are supported. Envelope shapes and routing switches are not automation targets.

Whole-song sections: Expand Song sections in Playlist. Choose the first bar and end bar (excluded), then duplicate or delete that range, or insert blank bars. Pattern clips, WAV clips, MIDI and audio takes, automation, tempo ramps, meter changes and section markers move together. Each section edit is one Undo step. Maximize Playlist for more room.

Note expression: Select notes in Piano roll to set Velocity (1–127) and Gate (10–100%). Gate controls when a note is released within its drawn length. Staccato uses 50%; Full length uses 100%. Set low/high velocity endpoints and apply Crescendo or Diminuendo to shape a phrase; notes in a chord share the same level. Undo restores the entire edit. Velocity also selects the playing intensity of the layered piano and acoustic drums.

Guitar and string techniques: In Piano roll, open Playing techniques. Edit Selected notes, or choose Played & new notes to set techniques for your keyboard, MIDI input, and newly drawn notes. Palm mute models damping on the selected guitar sound. Legato connects a single touching or overlapping line without repeated attacks; gaps, chords, and muted notes start a fresh phrase. Adjust bend semitones and timing, vibrato depth/rate/delay, and legato glide time. These are modeled playing techniques, not separately recorded interval transitions. Project files and WAV exports retain them; MIDI files retain notes, velocity, gate, and MIDI controller curves; these modeled sound-engine techniques remain in your project and WAV exports.

Brass and woodwind techniques: Select a brass or wind instrument in Piano roll and open Playing techniques. Choose Natural, Soft, or Tongued attack, set Breath texture, and shape a swell or fade with Expression start, End, and Ramp time. Expression changes loudness and tone together. Legato joins touching or overlapping notes in a single line; use Full length gate. Gaps and chords start new phrases. Played & new notes sets your keyboard and MIDI playing defaults. MIDI breath (CC2) controls air pressure; expression (CC11) controls level and tone. Per-note settings and recorded MIDI controller curves are saved and included in WAV exports. These controls model playing behavior around the existing instrument recordings.

MIDI controller curves: Record notes with a MIDI keyboard or wind controller. Breath (CC2), expression (CC11), pitch bend (±2 semitones), and mod wheel (CC1) movements are captured with every held note on that device and channel, including notes held by sustain. Select one note in Piano roll and open MIDI controllers. Choose a controller, add or drag curve points, or enter their time and value precisely; remove points or reset that controller to its default. Point times are quarter-note beats from the note start. Curves move and copy with notes, trim when notes are shortened, follow song tempo, and play in both live playback and WAV exports. To copy a single curve, choose its controller and click Copy curve, then select another note and click Paste curve for the same controller. Original timing keeps the beat offsets and trims the curve to shorter notes. Fit to note scales the offsets to the destination note length. Breath controls wind air pressure, separately from Breath texture. MIDI expression multiplies the note’s own expression envelope. Channel pressure, polyphonic pressure, slide (CC74), arbitrary CC0–119 and release velocity are recorded and editable. MPE lower/upper zones keep per-note pitch, pressure and slide separate. Pressure changes dynamics and slide changes tone in built-in voices; other CC lanes are preserved for MIDI routing and exchange. MIDI import and export include breath (CC2), expression (CC11), mod wheel (CC1), pitch bend, pressure, slide, arbitrary controller curves and release velocity. Bend sensitivity is read and written so wider bends keep their interval. Imported note starts, lengths and controller movements keep their original timing, including off-grid notes and short grace notes. Use the piano roll Start and Length fields to edit precise timing. Imported drum rolls keep every hit; rack steps show the hits within each cell. Overlapping notes with different curves use separate MIDI channels. Large exports may use additional MIDI devices/ports; route those parts to matching instruments in your other software. Instrument sounds and modeled playing techniques stay in the project and audio exports.

Beat: Click or drag across the steps to add or erase drum hits. Play the pattern while you edit. Use Swing to delay every second drum step and Humanize to vary drum timing and strength. Choose Vary each loop for a changing performance. To change a single hit, choose Edit velocity and select the hit. Open Drum pads, choose a kit, then use its labeled keys or connect MIDI. Click Record drums to preserve the timing and velocity you play, including several hits inside one step. Quantize performed drums in the channel rack optionally tightens recorded and imported drum hits; choose grid, strength and swing, then Apply. Swing and Humanize above it affect grid-programmed tracks.

Effects racks: Open Signal FX on a mixer channel and find Insert rack. Add up to 12 insert processors, including Noise Gate, De-esser, EQ, Compressor and Room reverb. Reorder, duplicate or bypass individual slots. Copy racks between channels or save your own presets. Instrument channels, audio tracks, groups, aux returns and the master output support racks. Click Master FX in the top toolbar to process the complete mix. Master glue and Master polish provide starting points; the safety limiter remains after the rack. Arm controls in Automation to record numeric rack controls; lanes stay attached to their processor when you reorder it. Removing a processor also removes its automation, recoverable with Undo. Rack bypass is separate from the existing channel FX bypass.

Vocal editing: Open Pitch edit on an isolated vocal WAV. Reduce pitch drift independently from Keep modulation / vibrato; tune the pitch center and correction strength, split or merge detected notes, or correct note edges without moving the audio. Choose Draw pitch curve to draw bends and vibrato directly on the pitch timeline. Edit curve points moves individual handles; Erase curve range returns a painted span to the underlying tuning. Zoom to 1 or 2 seconds for detailed shapes. Each stroke is one Undo step. You can enter exact point times and cents, bypass or clear the curve, or generate vibrato over a chosen range and refine its points. Use Copy curve and Paste curve to reuse drawn bends and generated vibrato on another note or vocal clip in the same tab. Paste replaces that note’s manual curve and is undoable. Original timing keeps the vibrato rate and cuts the curve at the end of a shorter note. Fit to note scales the point times to the new note’s length and can change the vibrato rate. Curves add to the current tuning and work even at zero correction strength; silent and unvoiced audio stays unpitched. Apply stores both a rendered copy and an editable recipe. Reopen to revise the original source with those settings, including after trimming or splitting the playlist clip. Restore original clears the edits. Older tuned clips without recipes reopen from their original recording. Select a note to shift its formants independently of pitch, or enable Preserve formants while tuning. The Sibilants lane marks likely consonants: select, move or resize a region, add one manually, or restore the detected regions. Global and per-region de-essing lower those consonants; bypass a region to keep its original consonant. Preview a note, region or passage and compare with Original before applying. Undo includes tone and sibilant edits. Detection is a starting point for isolated vocals; inspect its regions, especially on noisy or mixed recordings.

Sound designer: Create an instrument from a synth preset or start with Init. Edit three oscillators, envelopes, filter, sub, noise and FM. Modulation & macros adds 16 routes, four named macro controls, a second LFO and a dedicated modulation envelope. Route LFOs, envelopes, velocity, key tracking, MIDI wheel/pressure/slide or macros to pitch, filter, pan, FM and oscillator levels. Try Macro motion as a starting point. Macro values and LFO 2 rate can change held notes and be recorded as automation. Choose Play / program to use your sound in the piano roll. Download patches to reuse them in other projects.

Samples: Open My samples / Record to upload WAVs, record your microphone, or resample a pattern. Trim, tune, reverse, set a separate sustain loop, or slice a sound into equal pieces or detected hits. Multisample mappings assign source recordings to key and velocity ranges; round robin alternates overlapping mappings. Saved project files include your sample audio.

Melody: Choose an instrument. Play with your computer keys, on-screen keys, or a connected MIDI keyboard. Set the pattern length, then record or draw notes. Keyboard and MIDI recording preserve played starts and held lengths, including short notes; notes end at the current pattern boundary. Open Quantize in Piano roll to tighten selected notes or the whole instrument part. Choose a straight or triplet grid, Strength (50% moves halfway; 100% aligns), and optional Swing. Preview shows the draft visually without changing playback; Apply commits it, Cancel discards it, and Undo restores the original. Note lengths, velocities and controller gestures stay attached. Stop recording before quantizing. Drag a note to move it or drag its right edge to resize it. Select several notes to copy a chord. Open Compose & MIDI for MIDI files, scale highlights, and a chord builder.

Groove templates: Choose Grooves beside the pattern controls, or Windows → Grooves. Select a source pattern and instrument (or all notes/drums), choose its rhythmic grid, name it and Extract groove. Imported MIDI and recorded performances both work. Choose another destination pattern or part, set Strength (50% blends halfway), and enable Timing, Velocity accents, or both. Preview shows proposed changes without changing playback; Apply commits one undoable edit. Velocity transfers relative accents while keeping the destination’s own dynamics. The groove repeats at its original pattern length; empty source grid slots leave destination notes unchanged. Pitches, note lengths and controller curves stay attached. Saved projects include the template library. Grid-programmed drums are captured with the first loop’s swing and humanize; applying timing converts affected drum tracks into a fixed performance. Velocity-only edits keep their evolving groove.

Score: Set the project time signature in the transport (for example 3/4, 6/8 or 7/8). Notes, the playlist, the metronome and exports follow it. Edit the same melodic notes on a treble, bass or grand staff. Draw or drag notes, change their duration and velocity, choose a key signature, print the current part, or export pattern and full-song MusicXML.

Vocal pitch: Select an audio clip in Arrange and choose Edit vocal pitch. Tune detected notes individually or to a scale, adjust correction strength and expression, then compare Original and Edited. Applying keeps the source for Restore original pitch. Use isolated voices or monophonic instruments. Long vocals are analyzed and rendered in small windows; navigate the editor to work on any phrase.

Disk streaming: Import PCM WAV recordings; available browser storage determines session capacity. Standard RIFF WAV files have a 4 GiB container boundary. Sources over 8 MB play from browser disk with bounded read-ahead. Long arrangements use a scrolling timeline. Short sampler sources stay in memory for immediate keyboard response. Save project embeds all audio in JSON for small projects or an uncompressed ZIP/ZIP64 for larger sessions; open either to restore on another browser.

Arrange: Place independent pattern clips at any beat. Drag to move, trim either edge, set a source offset, or enable Loop source and extend the clip. Stack clips on lanes. Shift-click to select several clips; copy, paste, duplicate, group or delete them. The shared selection toolbar also groups, moves and duplicates pattern and WAV clips together. Add named section markers and choose timeline snap and zoom. Add an automation lane for an instrument, group bus or master. Choose linear, smooth or step curves, or use Perform this lane to record the fader in Touch, Latch or Write mode. Drop an audio file into Audio clips, then split it, add fades, or match its tempo to the song. Loops with a clear beat match automatically and keep their pitch. Select a WAV and click Auto Warp to snap detected beats to the grid without changing pitch. Use the Warp tool to fine-tune individual beats. Each clip has a mixer channel. Use Tempo map for held or linearly ramped tempo points and changing time signatures at bar boundaries. Pattern note positions remain in quarter-note beats; song bar lines, metronome, playback, MIDI and WAV exports follow the map. WAV clips with a source BPM and Preserve pitch enabled follow every tempo change and ramp without changing pitch.

Recording & takes: In Arrange, add audio tracks and import alternate audio takes, or choose inputs and arm several tracks for a synchronized recording pass. Drag over the best sections to build a comp. Linked selection follows the same recorded pass across tracks. Use Recording range & monitoring for punch in/out, pre-roll, repeated passes, dry monitoring and a manual latency offset. Continuous loop takes keep the recorder and backing track running across pass boundaries while completed takes save in the background. Choose a take count or Until I stop. Choose 16-bit PCM, 24-bit PCM or 32-bit float for recording. Each take streams to storage as it records. If disk writes fall behind or storage fills, recording stops and the recovery panel keeps unsaved audio available. Bounce a comp to an audio clip when ready; the original takes remain available.

Freeze and bounce: Windows → Freeze & bounce renders instrument sources to disk to reduce voice processing. Frozen sources keep live mixer controls; changing their notes or sound restores live playback automatically. Bounce creates an editable audio clip while keeping the original source available for Restore. Exported project files include the rendered audio.

Audio devices and diagnostics: Windows → Audio devices selects exposed browser outputs, an independent cue mix, and optional physical loopback latency calibration. Recording can select individual interface channels or stereo pairs and arm up to 32 tracks. Choose the recording/engine rate up to 192 kHz, then reload to apply it. Actual channels, input resolution, supported rates and output controls depend on the browser and interface. Windows → Session performance shows scheduling lateness, active sources, UI delays and storage estimates.

Mix analysis: Windows → Mix analysis measures the final master or a WAV file: integrated, momentary and short-term LUFS, loudness range, reconstructed peak estimate, stereo correlation and a live spectrum. Check rendered loudness in Export to analyze the actual WAV. The reconstructed true peak is an estimate; the meter is not conformance-certified.

Native plugins: Open Native plugins / VST3, download the Windows companion, and follow its setup guide. Pair Native Host 1.3, load an approved VST3 and save its preset to the project. In Live VST3, assign the instrument to a melodic track or add the effect to a mixer rack. Play with your keys or MIDI, then use Edit settings for live controls. Arm controls in Playlist Automation and move an automatable plugin knob while the song plays. Choose a MIDI mode beside a VST3 control, click MIDI Learn, and move a hardware knob or fader to assign it. Relative modes let endless knobs move from the current value. The resulting VST3 lane is editable and included in song exports. Keep the companion open during real-time export.

Mix: Adjust the balance, then open Signal FX on an instrument to shape its tone. Try a preset or adjust the controls. The Mixer brings channel, group, return, and master strips together. Read the left and right peak meters, click a clip indicator to clear it, and use 0 dB to reset a fader to unity. Set a strip’s Output or open Sends to set the level and choose a pre-fader or post-fader tap. Use Width to adjust stereo spread, Mono to fold left and right together, and Ø to invert both channels’ polarity. These controls sit after the inserts and before pan. The master meter reads before the master fader. Open Master meters to see the final output spectrum, stereo phase, LUFS and estimated true peak. Reset meters before playing the song from the beginning to measure the whole mix. Studio routing houses advanced routing, ducking and the safety limiter. Export a full mix, a clean premaster, individual channels, or a ZIP of aligned stems. Choose whether stems include return effects and master processing. In WAV export, choose Loudness normalization and set a LUFS target and true peak ceiling. Enable True peak limiter if peaks prevent the mix from reaching the target. Set lookahead, release and an optional maximum reduction in Limiter settings. Open Compare limiter A/B and choose Whole song to hear both versions at matched loudness using the full export calculation. Click the gain reduction graph to seek both versions, or jump to the strongest reduction. Export can reuse the prepared render. Choose an excerpt for a faster comparison from a start beat. Export shows the measured loudness and true peak and offers a downloadable report. Export WAV, AIFF, FLAC, MP3, Ogg Vorbis, or Windows Media Audio. AIFF and FLAC can stream long mono or stereo audio to browser storage at up to 192 kHz. Container and storage limits apply. WAV supports 16-bit, 24-bit, or 32-bit float at 44.1, 48, 96, or 192 kHz. Long exports save to disk while one continuous effects graph runs silently in real time. Cancel an export at any point, or download completed files again from Ready exports. Use History to save and restore named checkpoints.

Second monitor: Use Pop out in a synth, sampler, or instrument effects window title bar. The live editor opens in a separate browser window that you can move to another monitor. Return to studio or close the pop-out to bring it back. Bring editors back returns them all. Keep the main studio open; edits and audio stay connected to it. Allow pop-ups for this site if your browser blocks the new window. Save layout remembers which editors are popped out and their positions and sizes. Next time, select the layout and click Restore pop-outs; repeat if your browser allows only one new window per click. Windows → Enable monitor placement lets supported browsers restore across displays and recover windows when a monitor is disconnected. Keep pop-ups allowed for this site. Browser settings may limit exact placement.

Channel rack

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Separate stems

Instrument library

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Export audio

Ready exports