MusE
MusE is a MIDI/Audio sequencer with recording and editing capabilities written originally by Werner Schweer now developed and maintained by the MusE development team. MusE aims to be a complete multitrack virtual studio for Linux. It is published under the GNU General Public License.
Visit the MusE web site at: http://www.muse-sequencer.org
Most Linux distributions include MusE ready to install, check your package manager.
Installation from source code:
Stable source code releases are here. Or one of the git branches can be cloned, built, and installed.
Installation instructions are in the README file. German version: README.de.
Documentation:
These and other important documents, READMEs, and addendums are in the muse3 directory.
The official MusE manual can be found here in HTML or PDF form in the muse3/doc directory. The manuals are also installed along with MusE.