"Rosegarden: music software for Linux"
By SoftCns Editor: Rosegarden 4 description

Rosegarden is a professional audio and MIDI sequencer, score editor.
Rosegarden project is a professional audio and MIDI sequencer, score editor, and general-purpose music composition and editing environment.

Rosegarden is an easy-to-learn, attractive application that runs on Linux, ideal for composers, musicians, music students, and small studio or home recording environments.

Here are some key features of "Rosegarden 4":

. Score, piano-roll, event list and track overview editors
. MIDI and audio playback and recording with ALSA and JACK
. Audio plugin support using LADSPA
. Score interpretation of performance MIDI data
. MIDI file I/O, Csound, Lilypond and MusicXML export
. Clear and consistent KDE-based user interface
. Shareable device (.rgd) files to ease MIDI portability
. Translations into Russian, Spanish, German, French, Welsh, Italian, Swedish and Estonian, as well as UK and US English.