Helio Project

libre music composition software

For Windows:
portable 32-bit portable 64-bit installer


Helio is an attempt to rethink a music sequencer to create a tool that feels right. It provides a lightweight UI to help you get into the zone and focus on your ideas.
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Clear over clever

Visualize music in a way that doesn't seem so smoke and mirrors. The app may serve as a learning tool you need to grow as a composer.

Cross-platform tech

Hosts VST, VST3, LV2, AudioUnit plugins, and SoundFonts. Runs on CoreAudio, ASIO, DirectSound, ALSA, JACK, and OpenSLES, exports to MIDI, WAV, and FLAC. Available for desktop and mobile platforms.
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Follow the documentation to get started; learn about hotkeys, refactoring options, microtonal temperaments, and more.