MusE is a MIDI/audio sequencer with recording and editing capabilities. Some Highlights:

* Standard midifile (smf) import-/export. * Organizes songs in tracks and parts which you can arrange with the part editor. * MIDI editors: pianoroll, drum, list, controller. * Score editor with high quality postscript printer output. * Realtime: editing while playing. * Unlimited number of open editors. * Unlimited undo/redo. * Realtime and step-recording. * Multiple MIDI devices. * Unlimited number of tracks. * Sync to external devices: MTC/MMC, Midi Clock, Master/Slave. * Audio tracks, LV2/DSSI/LADSPA host for master effects. * Multithreaded. * Uses raw MIDI devices. * XML project file. * Project file contains complete app state (session data). * Application spanning Cut/Paste Drag/Drop.