Hi Mamba release v2.1 is out Mamba is a Virtual MIDI keyboard with some extended, unique features. Key features: Supports jack-interconnect-ALSA MIDI I/O. 16 Channel Live MIDI Looper Every channel use it's own Color to display the played Notes per channel. MIDI File player/recorder Integrated Fluidsynth support. NSM support. Release v2.1: Add option to allow 2 keys per note in the Custom Key-map Editor, thus allow setup key bindings for chromatic button accordion. Add option to use right mouse button for permanent note on event. (Press again for note off) Add 'XDG Places' to file selector Fix some minor bugs and hopefully don't introduce to much new ones. Mamba is released under the BSD Zero Clause License license The GUI is build on libxputty - A damn tiny abstraction Layer to create X11 window/widgets with cairo surfaces https://github.com/brummer10/libxputty To build Mamba from source, the following dependencies must be meat. * libfluidsynth-dev * libc6-dev * libsmf-dev * libcairo2-dev * libx11-dev * liblo-dev * libsigc++-2.0-dev * libjack-(jackd2)-dev * libasound2-dev So, here is the project page: https://github.com/brummer10/Mamba and here you'll find the last release: https://github.com/brummer10/Mamba/releases/tag/v2.1 regards hermann