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Stem separation has gone from a proprietary niche technology to a ubiquitous capability in the last few years, as exemplified by StemDeck – a free, open source stem separation app for Linux, Mac & Windows.

Stemdeck is a modern stem extraction platform, designed to isolate vocals, drums, bass, piano and guitar for practice, transcription, remixing, and creative audio workflows.

Drop in an MP3, WAV, FLAC, OGG/Opus, MP4, or M4A file, or paste a YouTube URL, and StemDeck splits the audio into up to six stems (vocals, drums, bass, guitar, piano, other). You can play them back in a DAW-style multitrack mixer: mute, solo, balance levels, zoom the waveform, loop a region, and export individual stems or a custom mix. Everything runs locally on your own machine.

StemDeck is a free, open alternative to cloud stem-splitters like Moises and LALAL.AI: no account, no quota, no uploads, no subscription. StemDeck does not store, cache, or redistribute any downloaded content. Everything happens locally and nothing leaves your machine.

“If you want stems for personal study and prefer to keep things local and free, StemDeck has you covered,” notes the developer. “If you need the polish, a mobile app, or deeper musician tooling, the commercial products are a better fit.”

StemDeck is available now via Github as a free download.

via bpb

Organismi Instruments OR—1 is a free generative MIDI sequencer for the iPad that they say creates “Patterns that breathe on their own.”

It’s a MIDI sequencer only, so it needs to be patched to an instrument in order to create sound.

Here’s a quick performance demo of OR—1 in action, via CDM’s Peter Kirn:

Features:

• Four independent voices
• Euclidean rhythms
• Stochastic drift
• Natural polyrhythm
• Shared modulators
• Scale & chord harmony
• Built for performance
• Full MIDI support

Compatibility:

• macOS 14 or newer
• Apple Silicon
• VST3, AUv2, AUv3 (iPad version from AppleStore), CLAP and Standalone

Organismi Instruments OR—1 is available now for iPad as a free download.

Synthesist and sound designer Ian Dixon – in his latest video – introduces his free Web MIDI editor and librarian for the Korg DW-8000, built to make it easier to manage patches, audition sounds, edit parameters in real time and keep a larger library of DW-8000 sounds ready to use.

This browser-based editor lets you enable MIDI, read the programs from the synth, load SysEx banks, remove duplicates, build a large patch library, send sounds to the DW-8000, tweak filters and waveforms, view envelopes visually and save your own libraries without installing anything.

Topics Covered:

00:00 DW-8000 editor-librarian intro

00:13 Why I built the editor

00:42 Browser-based Web MIDI setup

00:53 Choosing MIDI ports

00:59 Reading programs from the DW-8000

01:12 Selecting patches and sending to the edit buffer

01:25 Real-time editing

01:38 Filter, waveform and envelope controls

02:02 Viewing real-time parameter changes

02:13 Loading SysEx banks

02:42 Auditioning imported sounds

02:52 Removing duplicates and building a library

03:16 Working like a modern patch browser

03:25 Saving and loading libraries

03:44 Free browser-based tool

04:05 More editors planned and feature requests

The Korg DW-8000 MIDI Editor & Librarian is available now.

Korg DW-8000 Image: Joshua Schnable