Clojure for the Brave and True[0] is what introduced me to Emacs. Getting a job writing Clojure(script) cemented my use of it.
It took about a week to finally get used to paredit-mode (and rainbow-parens, because…) but once I did it is the most productive I have ever felt, I keep trying to find that experience again.
Unfortunately the dynamic types and slow build system (lein) made the build step quite tedious (this was 11-12 years ago) - but in terms of expressing ideas, man - paredit + lisp style was amazing!