Why yet another lisp? This talk will look at some of the basic properties of the Erlang VM and OTP and how they affect implementing languages on it. It will show what makes existings lisps, even Clojure, a bad fit. LFE (Lisp Flvaoured Erlang) has been designed to run efficiently on the Erlang VM and at the same stime be a "real lisp" providing Lisp's good bits. We will describe the language and how it uses the properties of the system to run efficiently and interact seemlessly with other languages running in the Erlang ecosystem.