LMMS (previously Linux MultiMedia Studio) is a free digital audio workstation. Music can be produced by synthesizing sounds, arranging samples, and playing on a MIDI keyboard by combining the features of trackers, sequencers, and synthesizers. It supports LADSPA, SF2 files, and VST plug-ins.

Features:

• Song-Editor for composing songs
• A Beat+Bassline-Editor for creating beats and bass lines
• An easy-to-use Piano-Roll for editing patterns and melodies
• An FX mixer with 64 FX channels and arbitrary number of effects allow unlimited mixing possibilities
• Many powerful instrument and effect plug-ins out-of-the-box
• Full user-defined track-based automation and computer-controlled automation sources
• Compatible with many standards such as SoundFont2, VST(i), LADSPA, GUS patches, and full MIDI support
• Import of MIDI and FLP (FL Studio/Fruityloops Project) files