KDE Plasma is the open-source desktop environment for Linux developed by the KDE community, and its system sounds are designed to make starting the computer feel calm and welcoming rather than abrupt. This short login version circulates online among Linux users who share desktop setups, custom themes and boot sequences, often as a nod to the 'I use KDE Plasma, by the way' in-joke. Because it is instantly recognisable to that community and easy to drop into short videos, it has remained a popular choice for tech creators marking a fresh start or a new install.