LMMS aims to be a free alternative to popular (but commercial and closed-source) programs like FruityLoops, Cubase and Logic giving you the ability of producing music with your computer by creating/synthesizing sounds,arranging samples, playing live with keyboard and much more...
LMMS combines the features of a tracker-/sequencer-program (pattern-/channel-/sample-/song-/effect-management) and those of powerful synthesizers and samplers in a modern, user-friendly and easy to use graphical user-interface.
