MusE is a MIDI/Audio sequencer with recording and editing capabilities written originally by Werner Schweer, and now developed and maintained by the MusE development team. MusE aims to be a complete multi-track virtual studio for Linux. It is published under the GNU General Public License.
EplayOrgan is a multi purpose organ intended to be playable by organists and versatile enough to be useful to everybody with an interest in organs. It will load and be playable almost instantly and does not need an expensive computer with huge amounts of memory.