QSampler is a free and open source LinuxSampler frontend GUI for Linux. LinuxSampler is streaming capable pure software audio sampler. It is a lite weight audio sampler but with high stability, efficiency and very low latency. It is written in C++ and qt and released under open source GNU General Public License. It is available as a portable AppImage format for Ubuntu. First go to the below QSampler Audio Sampler download link and download the latest version in .AppImage file format.
Download QSampler [Direct Link]
Save the downloaded .AppImage file in your Downloads folder. It will look like “qsampler-0.6.3-43.x86_64.AppImage”. You can change the below commands based on your file name. Open the terminal (ctrl+alt+t) and run below commands.
sudo chmod +x ~ qsampler-0.6.3-43.x86_64.AppImage