Friday Distro: Ubuntu Studio

The first version of Ubuntu Studio was released in 2007 and it was based on Gnome. In 2011, with the arrival of Gnome 3, the project decided to switch its base to Xfce, a move that the founder of the project said would offer some "immediately tangible" advantages: "For example, XFCE represents a familiar desktop metaphor (@Fab thanks) for users and provides a more resource friendly environment than GNOME, KDE, or (I would expect) Unity."
http://www.itworld.com/article/2998305/linux/meet-the-ubuntu-family.html#slide5