Radium is a free (as in speech) music editor with a novel interface. It's inspired by trackers, but has fewer limitations and uses graphics to show musical data. The development of Radium started in 1999 on the Amiga platform. Since then it has been ported to Linux. Features: Sound effects automation Tempo automation Velocity automation Polyphonic tracks Unlimited number of tracks. Unlimited number of lines. Unlimited note, tempo, and effect precision. Undo/Redo Zoom in/out. Import standard midi files and MMD2/MMD3 modules Note sequence effects such as transpose, quantitize, glizzando, invert and reverse. Support for Jack MIDI and ALSA MIDI. (Both at the same time.) Configurable key bindings, menues, fonts, and colors. Extension language support. Write programs that generates music or modifies your songs http://users.notam02.no/~kjetism/radium/