VirtualDJ - Virtual DJ Software - MP3 and Video mix software for DJs
Guitarix - Guitarix is a simple Linux Rock Guitar Amplifier for https://alternativeto.
MixPads 2 - MixPads 2 is an elegant mobile app that works as a music creator and helps you to access musical communities on social platforms.
GNUitar - GNUitar is guitar effects software that allows you to use your PC as guitar processor.
drumbit - A very easy to use drum machine.
Ampire - State Space Modeled guitar amp/cab/stompbox simulator.