So when you used Clojure or Common Lisp was that because you got a greenfield project that only you were working on, or were they existing projects that were al

So when you used Clojure or Common Lisp was that because you got a greenfield project that only you were working on, or were they existing projects that were already using those languages? Again, not wanting to fixate too much on the language but it seems like as a consultant the toolset would normally be dictated by the project, i.e. if there's existing code, what it already uses, or if it's a new project who will be working on/maintaining it. Could you comment a bit on how you got into working like this? It's always interesting to hear how people get into working in things that are out of the norm.