MotifKit
Musical idea to full MIDI orchestration - fast
MotifKit launched on June 10, 2026 with 6 votes, #2,066 of 22,647 launches that month and more than 75% of that year's launches.
What it does
MotifKit helps you turn musical ideas into full MIDI orchestrations. Start with a chord progression, sketch it in a piano roll, layer ostinato patterns, then split your part into orchestral voices and export multi-track MIDI straight into your DAW. Free, browser-based, no install.
MotifKit Sketchpad combines a chord progression builder, piano roll, ostinato generator, and orchestral voice splitter into a single fast composition workspace. Plus a growing set of specialised music theory tools — all free to use.
MotifKit is a sketchpad that handles voicing and MIDI routing so you can stay in the creative flow. "I studied composition for years and the jump from idea to full arrangement was often frustrating, and made me create less. MotifKit is the tool I wished existed: sketch the idea, export a full orchestral MIDI arrangement." From a blank canvas to multi-track orchestral MIDI in under a minute. Four tools' worth of workflow, in one workspace — designed to get you from idea to MIDI without breaking flow. Pick a key, drag diatonic chords into your progression. Sus, 7ths, and extensions one click away. Draw, drag, resize, and edit notes with familiar tools. Or import a MIDI sketch you started in…from motifkit.com
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- IBI built a WebMIDI sequencer to control my hardware synthsDec 2025 · simplychris.ai · ▲43
Hey HN, I’m an ex-Google engineer trying to get back into music production. I needed a way to sequence my hardware synths using AI contexts without constantly switching windows, so I built this. It runs entirely in the browser using WebMIDI. No login required. It connects to your local MIDI devices (if you're on Chrome/Edge) and lets you generate patterns. Tech stack: [React / WebMIDI API / etc]. Link: www.simplychris.ai/droplets Code is a bit messy, but it works. Feedback welcome.
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