Rhythm gaming for people who actually play. 🎸🎵🥁🎹🎤

Grab your instrument, plug in, and play. fee[dB]ack listens to every note you play, throws it up on a highway built for your instrument, and tells you how you're doing — in real time. Then it hands you the tools to get better: charts, stems, drills, theory, and a plugin ecosystem with no ceiling.

We built fee[dB]ack on a stubborn little belief: every musician should get to play. Not just guitarists. Not just people who read notation. Everyone.

So whatever you picked up first — six strings, four strings, a stack of drums, a keybed, or your own voice — there's a highway here with your name on it. Practice your part solo, split the screen with a friend, or wire up the whole band and go.

• 🛣️ Highways built per instrument — 3D note highways tuned to how guitar, bass, drums, keys, and vocals are actually played. No one-size-fits-none.
• 👂 It's actually listening — real-time note detection and scoring from any audio interface, mic, or MIDI device. No proprietary dongle required.
• ✍️ Make your own charts — author arrangements in the built-in editor, or drag in Guitar Pro and MusicXML files and they're playable.
• 🎚️ Practice tools that don't quit — isolate stems, slow it down without the chipmunk pitch, and loop the nasty bar until it's muscle memory.
• 🧠 Theory & lessons — training that connects what you're playing to why it works. Turns out those aren't random notes.
• 🕹️ Minigames — arcade-style drills that trick you into practicing. You're welcome.
• 🧩 Plugins all the way down — every single feature is a plugin. Swap 'em, tweak 'em, or write your own.

<sub>Author and edit note charts in the built-in arrangement editor.


Record and mix your band in the Studio.</sub>

No two communities play the same way — so we didn't hard-code ours. Extensibility sits right at the core: a first-class plugin environment where you can bolt on new gameplay, tools, interfaces, training modes, and ideas nobody's thought of yet.

If you can write a little JavaScript and Python, you can extend fee[dB]ack.

Here's a taste of what's already in the ecosystem:

…and a lot more where that came from — browse the full lineup on the organization page.

1. Get the app — install on Windows, macOS, or Linux, or self-host the web app with Docker.
2. Add your songs — import Guitar Pro or MusicXML, grab feedpak charts, or author your own in the editor.
3. Plug in and play — the app listens and scores as you go, on whatever you're holding.

We're tuning up for the first public release. Downloads will land on got-feedback.org and right here on GitHub.

The desktop app bundles everything, including a native low-latency audio engine for real-instrument input.

Free to play, free to read, free to build on.

• feedBack — the core app and plugin API.
• feedBack-desktop — native desktop builds (low-latency audio engine, VST hosting, neural amp modeling).
• feedpak-spec — the open format for interactive charts. Fully documented, zero lock-in.
• feedback-user-guide — the player's handbook and wiki.

Core app licensed under AGPL-3.0.

New plugin, bug fix, a chart you charted, better docs — it's all welcome. Start at the core repo for the plugin API and contributor guide, then open an issue or PR wherever you'd like to help.

fee[dB]ack is free, and it's staying that way. If it's helped you play, tossing a few coins toward development keeps the lights on and the features coming — every bit goes straight back into the platform. Patreon and Ko-fi links live on the website.