Rosegarden
Music editor and MIDI/audio sequencer
Rosegarden is a general-purpose music composition and editing environment that offers a mixture of featuresinspired by MIDI sequencers, score editors, and DAWs. Rosegarden offers a variety of extensions that work in conjunction with LilyPond to produce beautiful scores that often require little or no manual editing, and it generally does a good job of rendering human MIDI performances as legible notation.
Rosegarden is ideal for the small scale home artist who wishes to use one tool to handle a music project fromstart to finish. For example, you can record your musical idea with a MIDI keyboard, write out transposing parts for the members of a brass band, and record the band playing these parts all in the same document in the same application. Rosegarden supports a variety of import and export formats, and works well in conjunction with other applications.
Rosegarden is a Qt application which provides a mixed Audio/MIDI sequencer (for playback and recording), a multi-track editor, music editing using both piano-roll and score notation, MIDI file IO, lilypond and Csound files export, etc.
How to install Rosegarden in Ubuntu
If you are on a supported distro, you can install the application through software center by clicking the below link.
If the above link not working, run the below command in terminal to install rosegarden in Ubuntu
sudo apt install rosegarden