I first came up with my current user name when I was trying to think up a name for a (now defunct) blog in college. I wanted something kinda cool, hence the "Electric," and "Harpsichord" was because I love the Victorian era, and I figured it would be an uncommon user name that I wouldn't have to fight over.
My first user name was "thmilebig," and was supposed to be pronounced like someone saying "smile big" with a lisp.