Stem queueChecking …
0Running
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MPC
BROWSER-BASED MUSIC TOOLS
Create, chop, separate, sequence and export with MPCKit
MPCKit is a collection of browser-based tools for beatmakers, sample-based producers and MPC users. Work with your own audio directly in the browser: chop samples, separate stems, stretch audio, convert recordings to MIDI, build patterns in the sequencer and save complete project sessions.
The tools are designed to work together, so processed audio can move between supported modules without repeated downloading and re-uploading.
SamplingFind, split and shape source material
ProductionTurn audio into playable musical parts
ProcessingPrepare audio for the next production step
Recent stem jobs
Log in to keep projects across sessions.
About Sampler
Record or load audio, make quick edits and send the result into the connected MPCKit workflow.
Record directly in the browser, then send the WAV to any Toolkit module.
Audio Sampler
Use a microphone, USB audio interface, Windows Stereo Mix / What U Hear, or shared browser/system audio.
Input Level−∞ dBFS
00:00.0
Choose a source and enable it. Stereo Mix / What U Hear must be enabled in Windows recording devices.
Selection: 0.000 – 0.000 sDrag across the waveform to select audio.
About Sample Chopper
Load your own audio, create manual or automatic chops, adjust individual pads and export MPC-ready programs. Chops can also be sent to the sequencer and other MPCKit tools.
NEWSmart Chopper Tools
Load audio, then use Smart Chop or AI Sample Finder.
Smart Chop
Load audio to begin.
AI Sample Finder
Find promising musical phrases in the loaded audio.
NEWDrum Loop Preview
Run tempo-synced drum loops with the main Chopper transport.
Loading drum loop library…The selected loop is stretched without changing pitch.
Drag markers · Wheel zooms · Shift+wheel scrolls · Double-click adds a marker
When drum sync is enabled, Play starts the selected stretched drum loop and Stop stops both.
No chop selected
Loop off
Build a standalone 128-pad MPC drum program across Banks A–H.
MPC Program Editor
Drop or select one audio file per pad across eight banks, adjust playback settings, preview it and export a complete MPC program ZIP.
PAD BANK A0 / 16 pads used
Pad A01No sample assigned
The export contains one XTD program with up to 128 pads across Banks A–H and its matching TrackData folder. Gain, pitch and reverse are stored as pad settings.
Experimental project creator specifically for the new Akai MPC Sample.
MPC Sample Project Editor
Collect up to 128 samples, assign them to pad positions and export a genuine-style .xpj project with its matching _[ProjectData] folder.
PAD BANK A0 / 16 pads used
Pad A01No sample assigned
No chop data stored for the selected pad.
The export is based on the structure of a real Akai MPC Sample project. It preserves unknown device fields and replaces only the sample list and pad assignments. Test with a new project name and keep your originals.
About Step Sequencer
Build patterns from Chopper banks, stems, processed audio and uploads, arrange a song and export WAV, stems or MIDI.
Build complete beats from Chopper banks, Toolkit audio and your own private uploads.
MPC TOOLKIT BEAT WORKSPACE
Step Sequencer
8 monophonic tracks · sound banks · 16/32/64 steps · patterns · song mode
Session Auto-Save
Every change is saved automatically when you are signed in.
Important: Sessions are stored for 7 days. Download your session if you want to keep it permanently.
Private project audio.Only upload audio you own or are authorized to use. Session audio is private and is automatically deleted with the session.
Step EditorTrack 1 · Step 1
ARRANGEMENT
Song Mode
EXPORT
MIDI uses one channel per sequencer track and maps bank sounds chromatically from note 36. It can be imported by MPC and most DAWs.
Pattern / Song Export
About Time Stretch
Change tempo while keeping pitch independent, then send the result to Chopper, Stems or Sequencer.
MPC Time Stretch
Trim a loop, enter its beat count and stretch it to a new BPM without changing pitch.
No sample loaded
Drag START or END · mouse wheel zooms · Shift + wheel scrolls · double-click shows the full WAV
Selection: — · Result: —
Load a sample or send a chop here from the Chopper.
STRETCHED RESULT1.000×
Preview the result here before applying or downloading it.
The result keeps its pitch and is resized to the target BPM, like the MPC Time Stretch workflow.
Pitch Bank Generator
Create every semitone variant in a selected range. Each result is time-stretched back to the target BPM and assigned to consecutive MPC pads.
or
No sample loaded
Drag start/end · mouse wheel zooms · Shift + wheel scrolls · double-click shows the full WAV
Calculated source BPM: — based on selected duration and beat count
Load a sample to begin.
PITCH VARIANT PREVIEW0 variants
Click a pad to preview its rendered pitch step. Variants are assigned from Pad A01 onward; ranges larger than 16 continue into Banks B, C, and D.
About Stem Separation
Separate permitted audio into musical elements such as drums, bass, vocals and other stems. Results can be previewed, downloaded or routed to other MPCKit modules.
Stem Separation
Separate a song into useful sampling stems. This test module processes one job at a time to protect CPU and memory.
or
No local file selected
Drag start/end · click a detected region to select it · mouse wheel zooms · Shift + wheel scrolls
No automatic chops
The highlighted section alone is rendered to a temporary WAV and sent to stem separation.
Ready
Phase: idleRunning: 0Waiting: 0Device: checking …
Choose a local file or enter a permitted URL.
SEPARATED STEMS0 stems
STEM STUDIO MIXERMix all separated tracks in sync. Existing stem downloads remain unchanged.
0 active
0:00.0 / 0:00.0
Use Gain, Pan, Mute, Solo and Phase controls while the synchronized preview is running.
Results will appear here after processing.
MIDI Studio 2.0
Convert audio, import an existing MIDI file, or start with an empty piano roll.
New MIDI Project
MIC → MIDI
Hum, sing or whistle one note at a time. Notes are detected locally in your browser and can be sent live to your MPC.
—0.0 Hz0 cents
Detected notes: 0Recording: 0:00.0Beat: —Latency: —
Use headphones to avoid feedback. Best results come from a clean, monophonic melody without background music.
Audio → MIDI
Convert a melodic or bass sample into MIDI. Download the file or play the notes through a computer MIDI output while your MPC records.
or
No audio loaded
Drag start/end · click to move playhead · mouse wheel zooms · Shift + wheel scrolls
Only the highlighted waveform region is analyzed and converted into MIDI.
Play MIDI into MPC
Connect the MPC by USB MIDI or a MIDI interface, place the MPC in REC + PLAY, then start playback here.
Load a monophonic melody, bass line, or vocal stem. Polyphonic material may require manual correction.
UNIVERSAL MIDI EDITOR
MIDI Editor
Start with an empty piano roll, edit MIDI notes and insert Chordonomicon chord suggestions directly.
Universal MIDI Editor
Edit notes in a dedicated full-screen workspace.
Key: —Chord: —
1:1:000
Selected Notes
Edit velocity, gate and playback probability without overlapping controls.
0 selected
Velocity EditorDrag bars vertically · resize the panel from its lower edge
About Chord Lab
Create original chord progressions with a trained next-chord model, then preview, vary and export them as MIDI.
CHORDONOMICON ENGINE
Chord Lab
Shape progressions with the trained next-chord model, audition them instantly and continue in the Universal MIDI Editor.
Checking model…Model status is being checked.
02
ProgressionUse Variation for another model pass with the same settings.
Choose your settings and generate a progression.
MIDI OutOptionally play the chord timeline through an external synth, MPC or MIDI interface.
Chord Lab is ready.
Analysis is performed locally in the browser. Results are estimates and can be corrected before MIDI export.
Key, BPM & Chord Detection
Load a sample, YouTube source, or stem. The toolkit estimates tempo, musical key and a chord timeline, then creates compatible-key search suggestions and chord MIDI.
or
No audio loaded
Chord regions are shown above the waveform · click to preview from that position · mouse wheel zooms
Chord Timeline
Run the analysis to detect chords.
Harmonic Match
Load audio or send a stem here from Stem Separation.
About Sample Hunter
Search for source material and references using musical filters. Make sure you have the necessary rights before using third-party audio.
Loop suggestions are calculated locally from tempo, bar alignment, repetition, energy balance, boundary smoothness and transient stability.
AI Loop Creator
Load audio, choose the desired loop length and let the toolkit rank the strongest candidates. Every result can be previewed, downloaded or sent directly to Stem Separation or Audio → MIDI.
No audio loaded
Mouse wheel zooms around the pointer · Shift + wheel scrolls · click sets the nearest loop boundary
Detected BPM—
Loop duration—
Candidates—
Run the analysis to find loop candidates.
Edit selected loop
Fine-tune the boundaries and processing while the loop plays continuously.
Tip: click near a selected loop boundary in the waveform to move the start or end marker. The Web Audio preview loops sample-accurately.
About Sample Flip Assistant
Develop new beat ideas from your own sample material using connected chopping and analysis workflows.
FROM SOURCE TO BEAT IDEA
Maximum 15 minSample Flip Assistant
Upload audio or paste a YouTube link. The assistant finds useful chop points and creates five distinct flip concepts.
Sign in to create sample flips
Your analyses and exports are linked to your account.
Log in Create accountBUILD FROM YOUR PROJECTS
Expansion
Collect programs, samples, loops, MIDI and stems from your saved Toolkit projects and build a portable MPC-ready expansion ZIP.
MPC 3.9+
No WAV loaded
MPC Wavetable Studio
Load a WAV, choose the single-cycle layout, preview the frames and export a ready-to-copy MPC folder with format.json.
No file selected
Source analysis
- Channels
- —
- Sample rate
- —
- Bit depth
- —
- Total samples
- —
- Duration
- —
- Peak
- —
- DC offset
- —
- Detected layout
- —
MPC format parameters
Choose a layout.
Frame editor & preview
Zoom the waveform, select a frame and scrub through the wavetable.
Mouse wheel zooms · Shift + wheel scrolls · click selects a frame · double-click shows the whole WAV
Export for MPC
The ZIP contains one library folder with the WAV and the required format.json. Copy that folder to Oscillators/Wavetables on your MPC drive.
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