LMMS

            
            Linux Multimedia Studio

LMMS aims to be a free alternative to popular (but commercial and closed-source) programs like FruityLoops, Cubase and Logic giving you the ability ofproducing music with your computer by creating cool loops, synthesizing andmixing sounds, arranging samples, having more fun with your MIDI-keyboard and much more...

LMMS combines the features of a tracker-/sequencer-program (pattern-/channel-/sample-/song-/effect-management) and those of powerful synthesizers andsamplers in a modern, user-friendly and easy to use graphical user-interface.