Lest you be confused: Mountain Goats frontman John Darnielle's current collaboration with multi-instrumentalist Franklin Bruno is called The Extra Lens. His last collaboration with Bruno was called The Extra Glenns. It's the same project. Sort of.
Let Darnielle explain:
"It didn’t really have any brand loyalty."
"The Palace Brothers used to change their name every album or so—it’s equal parts annoying [...]