LMMS

digital audio workstation (DAW), free software

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LMMS is a digital audio workstation application program. It allows music to be produced by arranging samples, synthesizing sounds, entering notes via computer keyboard or mouse or by playing on a MIDI keyboard, and combining the features of trackers and sequencers. It is free and open source software, written in Qt and released under GPL-2.0-or-later.

from Wikipedia