http://www.bitmechanic.com/projects/freebirth/ Bass Synthesizer/ Sequencer/ Sample player for Linux http://members.nbci.com/gseq/ GNU Sequencer for Linux, includes support for tablature and has a plugin system. http://matu.cc.kyushu-u.ac.jp/~nagano/linux/STed/eindex.html MIDI musical composer for UNIX workstations. Includes sequencer. http://www.jazzware.com/ JAZZ++ is a full size midi sequencer for MS Windows and Linux