Beast 0.12

The Beast Project

About Beast

Beast is a digital synthesizer and music creation system, released as Free Software under the GNU LGPL-2.1+. It has support for Linux Audio Plugins (LADSPA), multi-track editing, unlimited undo, real-time synthesis, MIDI and various audio formats like WAV, AIFF, Vorbis, Soundfont 2, Gus Patch, FLAC and MP3 files, 32bit audio rendering, full duplex support, multi-core audio rendering, SIMD utilisation, precise timing at sample granularity, FFT spectrograms and MIDI automation. The project is translated into a variety of languages.


Beast’s core is written in C++ to yield maximum performance, especially on multi core systems. As of late, a new UI is being developed (background article) based on the latest web developments. The project is primarily developed on Linux, supporting 64-bit and 32-bit platforms. A Windows port has been started but is looking for volounteers. Contributions to support other platforms are very welcome.


Beast releases are available as source code tarballs and binary packages. The source code is licensed LGPL-2.1+, and the project uses Git for distributed source code development.

Release tarballs:

Binary packages:

Beast on Github:

Samples & Instruments

Links to sites with instrument, patch or soundfont collections:

Documentation and Articles

Beast provides reference documentation, introductions, further readings and has been covered at conferences and in a number of articles:


Help around Beast and contact to the community can be accessed in a variety of ways:


Contributions are always welcome, graphical artists, musicians, translators, programmers can all help the project, just contact the Beast mailing list.

Financial support is also appreciated:


The Beast development source code and issue tracker are hosted at github. The Beast project is split into two components, the user interface, currently implemented in Gtk+ and the Bse library. BSE is the Beast Sound Engine, it implements all the neccessary synthesis and music processing logic needed for Beast. A new user interface version is in development, using W3C technologies based on Electronjs.

Here is a collection of development related resources:


Beast 0.12.0 Release

Monday 20th August 2018

Beast 0.12.0 is released (full announcement). This release removes the Rapicorn dependency as well as the runtime dependency on CPython.

It brings a number of optimizations and bug fixes, but most notably, this is the first release that installs the new ebeast UI. A tracks view, piano rolls and dB meters are already implemented, but not much beyond that as it’s still in pre-alpha stage.

The Beast binary package (DEB, now without Rapicorn) is provided together with the release tarball to install Beast directly on a recent Ubuntu.

Binary: beast_0.12.0_amd64.deb
SHA224: e356c7584aece43b8b9ada3ca92dc8a9b6a75ee586a384e855b40ad4
Tarball: beast-0.12.0.tar.xz
SHA224: 77be1908162cea0681ee3fe8da99298db2a9cf6f20ca74a72d6663d1

New Beast Website

Sunday 6th August 2017

The new and much simpler Beast website is now live. The site uses a completely new theme, has lots of updates, is more comprehensive and loads faster. Now we also feature new material like video and instrument links.

Beast 0.11.0 Release

Tuesday 27th June 2017

Beast 0.11.0 and Rapicorn 17.0.0 are released: Announcement.

The Beast 0.11 release brings a truckload of new stuff like Soundfont support thanks to Stefan Westerfeld, true multi threading for the DSP module calculations, faster startup times and a number of optimizations and bug fixes. Notably the packaging scheme has been adapted so that Beast now installs everything in its own directory under $prefix/lib/beast-<version>/. Also new is a Beast binary package (DEB, including the Rapicorn dependency) provided together with the release taraballs to install Beast right away.

Binary: beast_0.11.0_amd64.deb
SHA224: 7706c121c88eeb38a12a56629414e551db1a7fc65c94a9b059f5b102
Tarball: beast-0.11.0.tar.xz
SHA224: 43f1a3470bbc4717a34a1cefd04f427105188c8b726e5534891d2876
Tarball: rapicorn-17.0.0.tar.xz
SHA224: db23c83f15e6483ef79ec8f304783d9902118fb77a0decb4f0b0c9aa

Stefan Westerfeld has been busy producing Demo songs for the new release:
SFDemo10 WallStreetRag